blue green algae hydrogen peroxide aquarium

This article helped me so much! Your aquarium has a blue-green algae bloom! Until a concrete confirmation made, this advice has helped some fishkeepers get rid of their BGA, (whether they indirectly did something else in addition is up for debate) so I’ll leave it in the guide for now. I currently have several Amano shrimp and they’re doing an awesome job of cleaning up the other types of algae and preventing some of the reinfection of the blue-green algae. Unfortunately, the black out method doesn’t appear to work for everyone where Ultralife Remedy has a much higher success rate. Do you use an aquarium test kit to regularly check your water parameters? Since all of the fish (severums, angels, corrys, plecos, kuhli, synadontis) and plants were faring well and there were no negative signs, I decided to go for it because…. Is this too much? It will start to kill it almost immidiately and you will notice a difference within 24-48 hours. The first thing I would look at is test the water for whatever it is you are dosing and see if there is a nutrient imbalance. Speaking of disgusting, you can identify some types of blue-green algae by it’s odor. Now, there are numerous theories as to why low nitrate levels cause blue-green algae to appear. Algae growth (and biofilm) is beneficial, as it is part of the diet of fish like catfish and other algae eaters, dwarf shrimp like Neocaridina and Caridina, even for snails. The more minor places the BGA was trying to get a foothold have all but vanished!. If it wasn’t such a pain, it would almost be beautiful, right? (I suspect that cyanobacteria dies because every cell lives or dies on its own food stores, whereas plants can store food as a whole organism, and can therefore store enough to make it through a few days of no light.). I’ve been fighting it for months…This stuff keeps coming back! Well, that wasn’t there 24 hours ago. And best of all, these methods actually work. You managed to get it in both your tanks? Unfortunately, a large portion of aquarium owners are beginners or have not been in the hobby for years. Yeah, that Blue Green Slime Remover is magic stuff. My gratitude to you and I am very thankful that I came across this article. I've been keeping fish for over 30 years and currently have 4 different aquariums – it's an addiction. On the fish dying, the only way it could have killed your fish to this degree is if it got so out of hand it caused the oxygen levels in your tank to drop. A good gravel vacuum and water change tomorrow and I think I’m done for this battle. It is time to clean one of them. Next, take a few blobs of what you think is blue-green algae and place them at the bottom of the bucket. From reading online, my assumption is that low nitrates plus phosphorus gave the blue-green its opportunity to takeover (guessing it stowed away on some grasses I had purchased). I remain optimistic that we will declare victory in this battle, and in the long run the war will be ours also with the new weaponry you have provided. Details: I’ve had cyanobacteria in tanks at home, in the classroom, and in my laboratory fish tanks. So to combat BGA blooms aquarists need to bring down nitrate levels. Advantages Controlling algae with ultrasound is a well-established technology used for many years. I have a cold water 20 gallon with only 7 small Daimos & Golden algae eater (who eats nothing looks like) but have the black beard starting in the heated tank upstairs with Tetras and Clown Loaches. It’s no secret that many types of blue-green algae are toxic.[6]. (coral moss) or Riccia fluitans (liverwort) may be damaged in the course of this treatment. This is what you stated above: “However, there is a cause that many experts agree on…. I have my fingers crossed that your current treatment works – I can’t imagine the adventure you have had to get to this point. 2)I would leave both in, just in case they are contaminated too and cleaning them leaves behind small traces. Beautiful. Those issues, as well as the blue-green algae appearance, sound like a water quality problem. Only ever read experiences in online forums. My best recommendation for using peroxide is to apply direct 3% peroxide on the algae outside the tank. Let’s be honest, blue-green algae is a menace. I’ve also never had black-out kill plants, and almost all my tanks are planted. Frankly I couldn’t get it here fast enough…even though it only took 2 days to arrive. Why isn’t that listed? I”ve put in about 5 doses into my tank. Did the peroxide help? Very nasty stuff, smells horrible, can’t be good for tank inhabitants. That slimy green ooze spreading across your tank is difficult to miss. Perhaps inadvertently eating it? 72 hours in and all of the desirable life forms remain well. The process of treating with hydrogen-peroxide is simple: Stop the external or internal filter (if you have a sponge filter, remove it from your aquarium) Add the recommended dose of hydrogen-peroxide into your aquarium You can also use spot-treatment directly on the blue green algae if … Okay, so I used this “blue exit” by easy life. As for increasing O2, it’s as simple as you say. I then had an outbreak of this blue green disgusting ‘algea’ a few months after I set this tank up. But before you get your hands wet, there is one thing you should know: This is my least favorite way of removing blue-green algae. Like with any medication, you should keep an eye on your water parameters by testing and react accordingly. Treating Algae in an Aquarium with Hydrogen Peroxide 3% H202 Hydrogen peroxide can be bought online or at many chemists or supermarkets and it’s an inexpensive solution. I agree with your thoughts entirely: Even though it looks like we are all dealing with the same BGA, the strain and how it reacts to treatment may vary. We’ve followed the directions carefully and have done three treatments for the second outbreak and it doesn’t seem to effect it much if at all. Hydrogen peroxide helps destroy blue-green algae. My 150 gallon freshwater tank has suddenly fell victim to this nuisance. We had a BGA outbreak and with much research was thrilled to find your information. Really bad. Based on this article I was able to identify the offensive attacking slime and quickly ordered the Ultralife product off Amazon. Make a dosage of 2 … Even the really beat-up moss is bouncing back. You might hear it referred to as BGA, green slime algae, smear algae or even pond scum because of the way it can build up on the surface of ponds.[3]. Last Updated on November 19, 2020 by Ian Sterling 80 Comments. However, there is a cause that many experts agree on…. It’s such a horrible thing and frustrating that you can’t tell since ammonia and nitrite levels remain at 0. Use at your own risk! It’s actually a bacteria called cyanobacteria.[1]. I’m hoping this easylife blue green exit stuff I’ve just started using today works. Do other fish keepers in your local area also have BGA problems? Besides the 5 year old clown loaches, I have Rainbowfish, corys, a couple SAE and a few otos. This is the hydrogen peroxide I used but any 12% rated hydrogen peroxide should work fine for you. If you definitively want to keep hair algae at bay, you can work with food grade hydrogen peroxide and clean your tank well. Then if it is, can someone explain about increasing O2 during treatment? Blue-green algae is ugly. If it doesn’t work for someone they can then spend money on something else, but if it does work you didn’t spend money and you don’t have any treatment chemicals in the tank. Below you see spots of blue-green algae at the bottom of a bucket…. In this category, we’re referring to the many types of algae that look like wet hair when … I’d start by testing your water with a test kit. That could kill BGA. Without it, they will eventually die. I hope the Slime remover kills your blue green algae for good, it feels like a losing battle otherwise. Some other aquatic plants may turn a lighter color temporarily, but this is not necessarily a sign that the plant is dead. I’ve been running my tank for 9 months with 3 Cory cats that actually bred to 9. This has to be one of the best articles on the subject. If the blue-green algae starts releasing tiny bubbles, it means, the hydrogen-peroxide is working (it is oxidizing) I’m really happy to hear you won your battle with BGA! If this is the case, you may need to pre-treat your water or find an alternate source. There are no active ingredients listed on the label. Adding nutrients in an incorrect amount to tanks is a real balancing act that can quickly lead to algae. It has always worked in my case. Otherwise just follow the instructions and test your water parameters each day, keep a particular close eye on nitrate spikes, since as the algae dies, it will decompose. Try not to let it drip in to areas of the rock that don’t need peroxide. I scrubbed the tank, substrate (it’s a planted aquarium) the ornaments etc. Required fields are marked *. And, it doesn’t take long for these small chunks to grow into large sheets of algae. Hydrogen peroxide (H2O2) or glutaraldehyde are two common choices. I’ll best that is a relief! They are most likely Red cherry Shrimp, sometimes called RCS, they are one of the most common red colored shrimp around. Putting two and two together, I’m guessing the plants had drawn down almost all the nitrates, capping their growth and giving blue green algae an opportunity to thrive. So surely you don’t want your fish near the stuff. So, if you see this, you can be certain you are dealing with blue-green algae. At first, this product is disappointing. Blacking out your aquarium will have mixed results. I wanted to show some of the ways I use Hydrogen Peroxide in my aquarium hobby. That slime remover works like magic. Hair Algae. As a basis for this treatment, we use the 3% solution for the Söchting Oxydator. The color change is a sure sign that it is dying. I know it can be disheartening, but you shouldn’t need to start from scratch. You can always remove BBA from aquarium by using hydrogen peroxide (3%), this can be obtained from local pet stores. Like with any chemical you add to your aquarium, make sure that you follow the instructions exactly and monitor your water parameters during treatment. They feel slimy to the touch and are thus sometimes called slime algae. I’ve not allowed it to get that bad and there’s no gasping. Product doesn’t work. Just like with anything in your tank, I’d advise you don’t eat it. I have never had success with the blackout method, which is why I recommend UltraLife. The most important thing is to not allow hydrogen peroxide to contact any corals or life that is not algae. This is a very good article about BGA. But the product would have to significantly reduce nitrates. It is proven effective for green and blue-green algae. Nitrates were close to 0 (which I know now may have frustratingly caused it) at the time I didn’t know it was this bacteria. Trials carried out in the Norfolk and Suffolk Broads National Park have shown that at controlled concentrations hydrogen peroxide (H 2 O 2) is deadly to Prymnesium parvum, the golden algae. Isn’t blue green algae poisonous to humans as well? Please make sure you do not hit any plants or animals directly with the solution. Will they eat up this tablet, too? Some say that the cyanobacteria is present in the local water supply, and is introduced into your tank during water changes. If you really want to go down this route, use a turkey baster. 4. How? Anecdotally, there are plenty of other reports of using blue-green stain remover in shrimp heavy tanks, such as Amano, or Cherries. Nitrate is food for plants, algae and BGA. Although admittedly these were tanks that were completely over run with the stuff, so it was almost impossible to remove every tiny piece. All brand names and trade marks are property of their lawful owners and only serve descriptive purposes here. It almost made me gag. You did well to see get rid of it with just with manual removal – Impressive! Typical usage is 2.8cc per gallon of 3% hydrogen peroxide no more than once a week. I also agree that minor BGA growths wouldn’t bother many aquarists. I then got some tetra & an otto. I have been keeping fish for over 30 years. Really love this discussion. There still seems to be some green in the substrate, but hope that will be vaporized also. P.s I had to laugh at your creative way of swearing, I’m going to steal that line! I’ve never had black-out NOT do significant damage to cyanobacteria, and when black-out hasn’t been possible I’ve often found that just cutting back on light lets me rapidly gain the upper hand with manual removal. We do not assume any responsibility for damages that may result from this treatment. and how do we UP the nitrates ?? Nitrates are around 20 and always have been, so it wasn’t due to low nitrates. So if you leave your blue-green algae infestation to grow, you are putting your plants at risk. can you say how many days or hours are `short blackouts“? In order to get answers to basic questions all around algae in the aquarium, we recommend you read this article first. Anecdotally, I’ve handled the stuff in my tank and thoroughly washed my hands with soap afterwards. I’ll give the Ultra life a try. You shouldn’t need to remove them from your tank. Our city water supply has become contaminated with Cyanotoxins. I have my fingers crossed the solution is as simple as this for you! In the case of green algae: 25 to a maximum of 35 ml of the 3% solution of hydrogen peroxide per 50 liters of water. Even deeper in the substrate along the glass, it has faded into oblivion! What with the plants and lack of nitrates this seemed to excel the problem. 2. While manual removal may control blue-green algae, it doesn’t kill it. Maybe it was contaminated. Let us give you an example: Let's assume you have a tank with a volume of 300 liters, which is infested with blue-green algae. Best of all, it won’t harm your biological filter, fish or plants – a major problem with harsher chemical treatments like Erythromycin or Maracyn. If necessary, increase the dosage slowly and in small steps (to a maximum of 4 ml per 50 liters). And, feeding your fish less will have no impact. Because blue-green algae sticks together and comes off in sheets, you have the option to manually remove it from your aquarium. There could be numerous reasons for this: 1. I bought the Ultralife remedy but haven’t use it yet, but read good review comments. I wonder if this stuff comes in the treated tap water? You will know when your blue-green algae is starting to die off because it dries out and turns a dark, almost black color. Just to add to the confusion, blue-green algae also goes by other less common names.  - free on orders over € 50.-. I was looking it up because my dog loves to swim and heard that there was a lethal amount of blue green algae in the great lakes where 100% chance she was going to jump in so I looked it up to make sure it’s was ok for here to swim not to solve a fish tank problem this problem could not be solved with this advice you should send this to all the cities on the edge of the lake’s. Would you like to share your secret as to how you did it? When adding Easy Carbo, keep to the maximum dosage recommended by the manufacturer (2 ml per 50 liters). If you are not careful, you can kill off all the good bacteria in your biological filter and harm your fish and plants. Hi My story is very similar to Lesley and we are both in the UK. Then came the black beard simultaneously with the BGA. I am heartbroken…and very confused…can BGA kill Plecos and snails? That's the only reason the word "cure" is in the title. 2. From my experience, fish are generally smart enough not to eat the stuff. I especially like the theory on how the cells die, it makes a lot of sense. Lesson learned. To say that this is a low-effort way of getting rid of blue-green algae is an understatement. I dosed the tank to an amount just below 2ml/gallon. I also completely agree with the logic of it not being a product first approach, where you can give it a go and if it doesn’t work, then you can try something else. I found an easy way to temporarily rid tank of 80% . I’m not sure that’s what caused the outbreak, but I’m not taking any chances going forward. One day my tank was a green mess, the next good as new. I.e nil nitrates favors CBA over plants due to it’s ability to fix nitrogen. Ian, After this I will definitely not be using the same equipment for both tanks. PS- I tried to add a bit of humor to this foulf smelling, slimy situation….and keep it PG. This is a big curiosity for me but unfortunately, I can only gather anecdotal data on the subject. Is it capable of doing that? For the record, there is no "cure" for algae as it's not a disease. I have 2 questions: 1. However, if it’s present in your local water supply then you will re-introduce it into your aquarium each time you perform a water change. Otherwise, it will affect your fishes. Let’s look at this product, Blue-Green Slime Stain remover. Thanks again for your insight. 9 hours of lighting is about average for a tank and I would be hesitant to suggest that this is the problem. I’ll keep in mind that you removed as much as possible before the black out, next time someone asks about it. If your nitrates are reading zero you likely have a nitrate reducing filter media, like zeolite, or perhaps your tank is really heavily planted. It is therefore the perfect solution for use in the aquarium environment. Thanks for sharing that interesting tidbit. It spread everywhere all over my moss. The problem with adding rooted plants to the aquarium gravel is that BGA uses the plant surface as one more place to grow. Later companies marketed barley derived algae inhibiters. I then spent a month treating the tank for various bacteria & virus meds just incase. I use peroxide pretty often without issues. If I had to guess, I would say the problem is coming from the plant-gro supplement. Let me try to explain: It is true that BGA can exist when nitrate levels in water are zero (so your first claim is correct). I’ve spent a small fortune on various treatments including one called ‘Blue Green Exit’ – none of which had any lasting effect. And the supposed expert for your claim provides no scientific evidence that the claim is correct. Do not overdose, because it will kill of your entire livestock. Should I do this prior to or after the Ultralife addition and dying off of the blue green slime? However, depending on where in the world you are located, this can be difficult to come across. hello, thanks for the article, I have used the remover but it comes back, i have used hydrogen peroxide and comes back, i am going to use now Kent Poly-Ox, but i am afraid with my Malaysian snails, the Nerites i have i can take out. The next one is erythromycin. A week on and the plants are growing again as they’re no longer competing for nutrients and light with the blue-green. Use a dosage as high as necessary and as low as possible in order to spare the animals in your tank undue stress. Given its name and looks, you would assume that blue-green algae is an algae, right? I’m sorry to hear you didn’t find the same success that the majority of others experience. In marine aquaria they can live deep in the recesses of “live rock” or in deep sand beds. Good luck! It still kept coming back. You can use 1.5 ml of 3% hydrogen-peroxide per 1 gallon (4 liter) aquarium water. I’m going to give blackouts another go, although I also hope I’m never in the situation again where I need to. Personally, I’d wait and see if it returns first to see if this step is necessary or not. I started the process about 15 minutes after delivery Sunday night, having already pre-staged an additional airstone in each tank. A safe dose for fish - 30-40 ml per 100 liters. Content found on is for informational purposes only and is not intended to be a substitute for professional veterinarian advice. This is the best article I have run across on cyanobacteria. Realizing there can be different strains – wondering if you have any ideas for the next step? It took 6 months for it to completely kill my amazon sword plant, by compleatoy covering every leaf. No negative signs from the plants or animals. Ian, I came across this article and discussion while researching following a manual removal in 2 of my tanks. Take a little bit of your aquarium water and fill a bucket so that it is at least one inch full. See that green glow around each of the dark clumps? Now I even go so far as to thoroughly clean my gravel vacuum. Love this posting and all replies! It shouldn’t hurt any of your tank’s residents, but try to keep this solution as a last resort. I have large hot water tanks I use for food prep , so how can I effectively decontaminate the hot water heater tanks after the city water warning has lifted? That’s awesome to hear that you had success with the black out method, where possible, I prefer to go the route where chemicals are not used. This is a good thing – your fish are smart enough not to eat something that might harm them. And as it does, it will cover your plants in a slimy film that is thick enough to block out light. I only ask as every case of manual removal I have seen has resulted in a quick return of blue-green algae. Let’s say you did nothing to fix this outbreak. Years ago, when I first dealt with a blue-green algae outbreak, I attempted the blackout method without any success. Blue-Green Algae is a bacteria but it can photosynthesize like a plant. Crossed-out prices refer to the former price in the Aquasabi shop. Also, given my success knocking cyanobacteria back with black-out, even an “unsuccessful” treatment might reduce the cyanobacterial problem to one that can be handled manually. And to avoid any confusion, I’m going to refer to it by what it looks like – in this case, blue-green algae. For more information, please refer to our Comment Policy. Please make absolutely sure you do not exceed the percentage of H2O2-of 3% or you may have a hard time calculating the dosages correctly. The main places the BGA set up camp have changed to a darker, dull green/brown instead of the bright green they were. © 2018 Aquasabi | Created with and in Braunschweig, Germany. Years ago I spread hydra throughout every one of my tanks by taking the plants out of one and splitting them across the others. Many scientists believe that if it wasn’t for the formation of cyanobacteria, humans may not exist! If you attempt to pick it up by hand, you will be able to remove entire patches of it…. Water quality was perfect throughout the 9 months of tank setup btw. In my experience a single dose followed by keeping a close eye on water parameters has stopped it from returning. The low nitrate hypothesis makes logical sense. Also what about the drift wood and I going to have to remove this as well. Postage cost as much as container – but I don’t care – BGA has gone!! So far my fish seem to happily coexist with this creeping crud÷. In its early stages, blue-green algae just looks like a green smudge…. Also, Ultralife Blue Green Slime Remover is a powder. Depending on the algae species, we recommend different dosages: In order to calculate the dosage you need for your aquarium, divide the gross volume of your tank by 50. Thanks for sharing your experience! The key to knocking back BGA would be a bacteria capable of reversing this cycle and breaking down nitrate into nitrogen gas. Even though both of these are cyanobacteria, they look completely different, right? However, this is typically easily observable – fish show very obvious symptoms such as gulping at the top of the tank. It might be called a “stain remover,” but this stuff stops a full-blown blue-green algae bloom in its tracks. Three kinetic profiles for the formation of hydrogen peroxide, were observed; these are described. I would love to hear from others who have had success blacking out their tank. The combined use of both algicides increases their effectiveness considerably. Let me know in the comments below! Your comment will appear after it is approved by our staff. I believe it contains manganic acid (H2MnO4), which should act similar to Potassium Permanganate (KMnO4) – so make sure you read up on how this will affect your tank. And as far as bacteria go, it’s pretty weird. Thanks, I’m also covering the tank in darkness for three days to hopefully kill it once and for all. I have a small planted tank and this algae slime killed quite a few plants before I figured out what to do. I’m happy to report I’m finally free of this horrible stuff. I’m not amazingly worried about treatment chemicals, but these are chemicals designed to kill something. You add it, and it looks like nothing is happening. Sometimes the cyanobacteria re-establishes later, which may be a problem, but I suspect that this is because I didn’t black-out tanks for long enough. what do you think? A couple months later it has returned, slow growing but frustrating. Also, cyanobacteria are able to photosynthesize – that is, use light to create food. However, as you suggest, it’s possible even this won’t work on certain strains. The black beard I scrape off the glass with a plastic spoon,and the BGA I try to remove manually but I’m loosing the battle. Well, this guide is about freshwater cyanobacteria, specifically the type found in your aquarium. Apply hydrogen peroxide to the algae. But my point was it seems to be the algae eaters who suffer most from this. I had nothing then suddenly I had this together with black beard algae. It is true that even if the aquarist brings down nitrate levels to essentially zero BGA can still survive. I know it’s too late now, but buying individual tools for each tank will help spreading algae like this. Today, I am going to teach you everything there is to know about blue-green algae, including how to eliminate it altogether. € 4.90 I have been battling this for some time and just wondering if I should remove the plants that are covered such as my moss balls that are completely covered I also have duck weed and afraid that stuff is just going to make this a real long process. Ha, explaining fish purchases to the wife… I know that feeling all too well as she does the budgeting in hour home. Good luck! Hydrogen-peroxide will kill off beneficial bacteria too. I have a planted tank and noticed that plant growth slowed down about a month ago and now blue green algae has shown up (it really reeks). Hydrogen peroxide. That you say your tetras died too leaves me to think it was an issue separate to the blue-green algae, as these are not algae eaters and wouldn’t have died from eating it. Please read the safety instructions of each product before use. If a lot of plants live in an aquarium, then it is necessary to use the preparation once a day, the dose of the product is 25 ml per 100 liters of water. However, in the aquarium hobby we know cyanobacteria as dark green, blue-green to almost black coats on aquatic plants, decoration or the substrate. In especially extreme cases you can combine hydrogen peroxide with Easy Carbo. I won a battle against it in 2 of my tanks using manual removal and frequent water changes. Curious if upping the nitrate level alone would be enough to let plants get the upper hand? And, here’s what it looks like under a microscope. This is quite extreme but is usually effective at … And as a result, a lot of conflicting information exists as to what actually causes blue-green algae to appear in the first place. It’s also considerably more expensive than Hydrogen peroxide, so I would make that the starting point. To perform a spot-treatment, turn off everything that generates flow within the tank, carefully spread the biocide in the desired area with a syringe, wait 15 min, then turn the flow on again. The only place the blue green is really problematic so far is on my mosses (fissidens fontanus) since I can’t manually remove it from there without ripping out the moss in the process. Ultralife has always worked for me and members of the local fish club, I am sure it will work for you too! The hair algae stuck so hard had to cut the affected leaves off. After these days have elapsed, please give your aquarium some time to rest.

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