Aquarium AlgaeControl

Tetra AlgaeControl removes aquarium algae.
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Removes unsightly algae fast from your aquarium!

Tetra AlgaeControl™ not only combats aquarium algae, it also works to keep it from returning. AlgaeControl™ is highly effective against green water (algal blooms), bluegreen algae, diatoms or “brown algae,” hair algae or blanketweed that grow on the glass and décor. Unlike some other products on the market, Tetra AlgaeControl™ can be safely used in planted aquariums. Tetra’s precision dropper tops help consumers administer the proper dose to their aquarium. One drop treats one gallon.
Aquarium AlgaeControl is rated 3.3076923076923075 out of 5 by 13.
Rated 5 out of 5 by from Fish must be tough I read reviews for first time yeterday after looking for dosage online. I have to admitt I have been using product for a year before checking dosage. I have been over doseing big time. Just to control algae on glass. I have had my goldfish for 7 years now they are beautiful. I guess from reading other reviews my goldfish must be tough as nails. Because tetra has no effect on them at all. It does a great job keeping my tank looking great. But also my tap water has clorine in it and that doesn't bother them either.
Date published: 2016-08-06
Rated 5 out of 5 by from Very helpful product I have used this product for a long time with no adverse effect in my aquarium. However, I have not been removing the activated charcoal and now just wondered about that. My question was answered and now I will remove it for a few hours to improve the results of the product.
Date published: 2016-08-05
Rated 5 out of 5 by from It's an amazing product. All right everyone say hello to my little friend. :-) please allow me to start by saying I am not a fan of using chemicals at all. Heck even my garden is 100% organic I raise my own chickens and hunt a lot of my own food. However sometimes even poison can be a good thing if used wisely and carefully. For quite some time now I have battled Green Spot algae to no avail because even in healthy tanks with bright lighting you're going to get green spot algae on leaves no matter how healthy your plants may be. But for me the real problem started about a month ago when I had a lot going on and so did my wife. We had a brief failure to communicate and she thought I was forgetting to feed my fish LOL. I am not saying anything is her fault at all. But the fish ended up being fed double time everyday for about a week meaning that I was feeding them their usual amount which is slightly too much and my wife was feeding them her usual amount which is a very caring healthy motherly dose of too much. And boom that was a recipe for disaster. In no time I had pea soup for water even though my aquarium is heavily planted and I have a filter big enough for a tank twice its size and a powerful water polisher there was nothing I could do to remedy the green water algae. I was even doing three 75 percent water changes a week to no avail. Then I started seeing hair algae Black Beard algae the Green Spot algae got out of control and the brown algae went crazy. It got so bad that I was to the point of nearly hanging up my hat. I did a lot of research and refused the idea of chemicals. Then the other night I did what I should I have done in the beginning I listened to my wife. We were in Walmart and she pointed this stuff out to me. The main reason I was so scared to use this chemical was the fact that algae is in fact a plant at its lowest form. So it made no sense to me how a chemical could kill one plant while sparing another. I took the chance and still skeptical I dosed my aquarium with half the recommended amount. I then took my seat in front of the Aquarium and watched the white filter pad on my water polisher turn hunter green within 5 minutes. I took the filter out gave it a good wash replaced it and sat back down to see my aquarium turn crystal clear Within 30 minutes. Now completely astonished I approached my wife saying well honey you were right and of course I got the mmm hmmm I told you so bit. LOL then I gave her a big kiss saying well I'm very glad you did. I have held back on Advertising for this product until today because I wanted to make sure none of my plants or fish were affected. And as I had hoped nothing went wrong at all. That is at least with my 20 gallon tank. In my betta tank it caused an ammonia Spike. I believe this is because I used the full recommended dose and the betta tank is very small. It says on the instructions on the bottle and on the website that this should not be used in newly set-up tanks. This is because not only does it kill algae but it can harm the beneficial bacteria in the filter system. So really I should say use it at your own risk and be sure that you do not have any snails or crustaceans including invertebrates in your aquarium. Because it says on their site it will kill them deader than a doornail. with the first dose. I also wouldn't recommend using it at full strength seeing as a half of a dose was like a tactical Warhead for my problem. But this stuff is no joke it decimated all of the Green Spot algae and destroyed the green water algae and it is taking its time on the black beard but it is melting it away and the brown algae threw in the towel the first day. I apologize for being long-winded but I am quite ecstatic about the results of using this product. So thank you for your time and I wish you all the luck and Fortune you can possibly have. :-)
Date published: 2016-06-04
Rated 1 out of 5 by from HORRIBLE!!!! DO NOT USE!!! I really do hate this product I just hope I would of read forums before buying it! you should be ashamed for putting this kind of products on sale, being so dangerous for the poor fish!! so mad
Date published: 2016-06-02
Rated 2 out of 5 by from No instructions on bottle There is no direction on bottle other than it treats 1200 gallons of water dose not say how often to add very vague instructions would like to see more forward instructions on bottle at to how to use product we added this to tank well see if it clears up the water hopefully it don't kill the fish we have in the tank I'll update once we see if this product actually works
Date published: 2016-04-08
Rated 2 out of 5 by from Killed my large healthy African chiclid I dropped the algae control to clear some brown algae attached to glass not sure whether i need to remove fishes before throwing this in. I sprayed in water circulator (catridge) and within few hours my 2 African chiclid died and rest are mostly inactive. Only difference from previous day is that i added few drops of Algae control from tetra, the fishes lived happily for more than 3 months and i didnt change the water in last 3 weeks..
Date published: 2015-05-15
Rated 5 out of 5 by from Aquarium Algae Control worked great I have a small aquarium and was upset when it turned green as soon as the weather warmed up. I used this product and was very happy with the results. The water cleared up and all the algae disappeared very quickly. Just two drops and the water was crystal clear the next day. Thanks Tetra!
Date published: 2015-04-18
Rated 5 out of 5 by from Great algae control product even works with turtle tanks. This is the best algae control product I ever had. I am very happy with it. It even works with turtle tanks.
Date published: 2015-04-07
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How does the Tetra Algae control actually work? What does it do to the algae currently living in it?

Asked by: niki1920
It slowly destroys the DNA of the algae, causing it to gradually die off. As it does, your filter system removes it. This is why we recommend putting the filter cartridge back into the filter after about 4-6 hours, so it may pull the dying and dead algae out of the water.BREX
Answered by: BREX
Date published: 2016-09-28

my 20 gallon I can not get rid of the brown algae that has taken over almost all of the decor. I have wash it all and it is still not going away it keeps coming back. I have a betta, neon tetras, bloodfin tetras and albino cory catfish. will it hurt them

Asked by: danagirl
Algae is always present in aquariums. It is typically due to a lighting issue or a nutrient overload. Make sure you are not just cleaning the décor, but also vacuuming your gravel at least once a month and replacing 30% of the water each time. If you have a fluorescent style light and the bulb has not been changed in a year or more, definitely change it, even if you think it seems bright enough. BREX
Answered by: BREX
Date published: 2016-09-26

How many drops for a 20 gallon, how many for a 10 gallon and how many for a 5 gallon

Asked by: danagirl
It is 1 drop per gallon or 1 ml per 12 gallons. So it would be 5 drops, 10 drops and 20 drops, respectively for 5, 10, 20 gallon tanks.BREX
Answered by: BREX
Date published: 2016-09-26

Can you use this on glow fish

Asked by: danagirl
Yes, it can be used with glofish. We do recommend a partial water change of the tank first, prior to use in general.BREX
Answered by: BREX
Date published: 2016-09-26

I went from a clear 29 g tank to a green water tank in a matter of two days.I did a half tank water change, new filter.  The green just came right back.  I tried waiting 3 days but it just came back. I have since done 3 more water changes, no change. help

Asked by: jsloan
Green water has a couple of causes. 1. Too much light - the tank light should only be on about 10-12 hours per day and make sure the tank is not near a bright window. 2. Excess nutrients - this is from overfeeding, lack of vacuuming and lack of partial water changes or overstocking of fish 3. High phosphates or nitrates in the resource water. Try a different water source for 2-3 water changes such as bottled natural spring water 4. Unhealthy biological filter - we highly recommend adding Tetra SafeStart Plus to give your biological filter a boost as it may be lacking at the moment. BREX
Answered by: BREX
Date published: 2016-09-26

how often should I treat a 10 gal tank

Asked by: jejg
Good morning,Algae Control should only be used as a treatment for existing algae in an aquarium. You would want to remove the filter cartridge, treat 1 drop per gallon of water, then wait three days. After the third day you would need to perform a 25% water change and redose and wait another three days. Finally after the second treatment, you will do the last treatment cycle. Dose again and then wait another three days and then perform another 25% water change and reinsert your filter cartridge. Over all you will be treating the tank for a nine day period with three treatment cycles. Once the algae is clear, you would not need to use this product again until you have another algae bloom. Also you would need to wait at least a week in between treatments.MINI
Answered by: Mini
Date published: 2016-09-02

i have a small red ear slider and i purchased algaecontrol to help with the algae. will this product hurt him? ive read the reviews and some people are saying it killed their fish. i havent used it yet. could i please get some feed back? thank you.

Asked by: joey1828
It does not kill fish unless used incorrectly or the tank is in very poor shape. However, it has not been tested on turtles, and as they absorb chemicals through their skin, it is not recommended for use with them. To help eliminate and control algae in a turtle tank, simply change about 50% of the water once a week. You may also want some serious filtration, such as a canister filter.BREX
Answered by: BREX
Date published: 2016-08-16

Why remove the activated charcoal when using Algae Control?   How long?

Asked by: Rosem
Because the carbon will remove the chemical from the water, rendering it useless. Leave it out for 4-5 hours, then put it back in. BREX
Answered by: BREX
Date published: 2016-08-05
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