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Tetra 77183 AlgaeControl, 1.69-Ounce, 50 ml

  • Based on 4,121 reviews
Condition: New
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Availability: In Stock.
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Arrives Dec 15 – Dec 16
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Size: 1.69-Ounce


Features

  • CONTROLS ALGAE: Liquid formula effectively combats algal blooms that cause green water.
  • KEEPS GLASS AND DECOR CLEAN: Works against algae that grow on glass and decor, such as blue-green algae, diatoms, brown algae, hair algae and blanketweed.
  • SAFE FOR PLANTS AND FISH: Safely use Tetra Algae Control in planted aquariums when used as directed.
  • INCLUDES DROPPER: Apply one drop per gallon of aquarium water.
  • USAGE: Apply in the morning see product label for complete directions for use.
  • A precision dropper top helps you administer the proper dose to your aquarium.
  • Tetras stateoftheart formula makes it the most highly concentrated algae control product available on the aquatic market today.
  • This item is not for sale in Catalina Island
  • This item is not for sale in Catalina Island

Description

Tetra® Algae Control™ is formulated to remove unsightly algae fast from your aquarium. This liquid formula effectively combats aquarium algae and also works to prevent it from returning. This formula is highly effective against algal blooms that cause green water and works against algae that grow on glass and décor, such as blue-green algae (oscillatoria), diatoms, “brown algae” (synedra), hair algae (spirogyra) or blanketweed (oedogonium). Safely use Tetra Algae control in planted aquariums. The precision dropper helps you administer the proper dose to your aquarium. One drop treats one gallon of aquarium water. Before applying Tetra Algae Control, first remove as much algae as possible by cleaning the glass and décor. This allows the product to be most effective at reducing the remaining algae and inhibiting new algae growth. Remove activated carbon filters for 6 to 8 hours after dosing. Be prepared to clean out additional algae as it is killed to prevent deterioration of water quality. See product label for complete directions for use. Since 1951, Tetra has developed the world’s most comprehensive body of fish food knowledge, and fishkeeping enthusiasts have looked to the brand for products and solutions that add ease and beauty to their home. Whether you're an experienced hobbyist or just starting out, Tetra has everything you need – from a large variety of quality fish food and innovative equipment to test kits and decor. Broad Spectrum Algae Control:Tetra Algae Control works to combat algae and new algae growth in your aquarium. This highly effective formula is effective against green water (algae blooms), bluegreen algae, diatoms or “brown algae,” and hair algae or blanketweed that grows on glass and décor.Safe to use with Fish and Plants:Unlike other products on the market, Tetra AlgaeControl liquid can be safely used in planted aquariums. A precision dropper top helps you to administer the proper dose to your aquarium for safe and effective algae control every time.Tetra Sets the Bar high in Water Care and Maintenance TreatmentsTetra sets the bar high in water care treatment and maintenance with a four-step, color-coded system. From aquarium start-up and routine maintenance, to trouble shooting solutions and testing, Tetra offers everything you need to keep your aquarium water healthy. Take a look at the chart below to see the full line of Tetra water care treatments. New Aquarium? Tetra SafeStart allows you to safely add fish to your tank immediately. Use AquaSafe whenever adding water to neutralize chlorine and heavy metals. Use EasyBalance weekly to keep your water chemistry balanced. High ammonia? Use AmmoniaSafe liquid or tablets. Cloudy water? Clear it up with WaterClarifier liquid or tablets. Algae issues? Keep in check with AlgaeControl liquid or No More Algae tablets. Tetra EasyStrips make regular water testing a breeze.

Brand: Tetra


Liquid Volume: 50 Milliliters


Item Weight: 1.69 Ounces


Item Form: Liquid


Manufacturer: Tetra


Is Discontinued By Manufacturer ‏ : ‎ No


Product Dimensions ‏ : ‎ 1 x 1.88 x 3.69 inches; 1.69 ounces


Item model number ‏ : ‎ 77183


Date First Available ‏ : ‎ October 15, 2006


Manufacturer ‏ : ‎ Tetra


Best Sellers Rank: #7,454 in Pet Supplies (See Top 100 in Pet Supplies) #47 in Aquarium Water Treatments


#47 in Aquarium Water Treatments:


Customer Reviews: 4.1 4.1 out of 5 stars 4,121 ratings


Item Weight: 1.69 ounces


Manufacturer: Tetra


Item model number: 77183


Date First Available: October 15, 2006


Item Package Dimensions L x W x H: 3.7 x 1.77 x 0.94 inches


Item Dimensions LxWxH: 1 x 1.88 x 3.69 inches


Item Weight: 1.69 Ounces


Brand Name: Tetra


Target Audience Keyword: fish


Directions: See label for details


Warranty Description: See Label.


Model Name: AlgaeControl Water Treatment


Color: No Color


Size: 1.69-Ounce


Age Range Description: All Life Stages


Number of Items: 1


Style: Unflavored


Included Components: See Label


Specific Uses for Product: Outdoor


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Dec 15 – Dec 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • It really works
Size: 1.69-Ounce
OMG! This product works so good, that it cleaned the algae off the my snails. The water even looks clearer.
Reviewed in the United States on November 8, 2025 by nyron webb

  • Excellent quality
Size: 1.69-Ounce
Excellent quality and really good price for the product! Works really good clearing up my dirty turtle tank!
Reviewed in the United States on November 3, 2025 by Amazon Customer

  • 100% works but might be a bit harsh
Size: 3.38-Ounce
We have a small 5 gallon portrait fish tank that gets enough natural light shining on it that algae has been a problem. I’ve done regular water and filter changes but it turns green again in a day. I put only 4 drops in the tank to start and that might have been too much! The water turned crystal clear and clean very quickly but it seemed to affect our snail. At 1 drop a month this one bottle will last years! Very well packaged and looks great. ... show more
Reviewed in the United States on November 13, 2023 by Amazon Customer

  • Slow and steady!
Size: 1.69-Ounce
First thing! This is not a instant fix but I been using it for a couple weeks and it’s def Cut down on the algae in my tank. Second, don’t overdose and take your time. You don’t want dead fish.
Reviewed in the United States on October 2, 2025 by Jeff

  • Jefferson Dahmer of fish killers!!!
Size: 1.69-Ounce
WTHOLY HECK IS THIS PRODUCT?!?! I ordered this off of Amazon ONLY because my local fish store was out of stock and I didn't feel like driving 11 minutes up the road to another fish store!! I SHOULD HAVE DROVE!! This stuff killed ALL OF MY AQUATIC FAMILY MEMBERS!! My frog to my Tetras to my pleco...you name it!!! Even when used properly, it made my water cloudy, killed my fish and left an oily substance at the water level...not to mention the smell of my aquarium water was severely off!!! DON'T BUY!!! BUT, ON A GOOD NOTE!! MY ALGEA PROBLEM SURVIVED🙄! ... show more
Reviewed in the United States on September 12, 2025 by Mona Mona

  • It really works
Size: 1.69-Ounce
I couldn't get rid of the green water. Algae was growing on everything. I scrubbed and did water changes every two days and modified all the feeding and lighting so no effect. Finally broke down and got this stuff. Worked great. Aquarium is clean and water is crystal clear. Directions state 1 ml per 12 gallons. I have a 40g breeder tank which would have been over 3 ml. Decided to error on the side of caution and only put in 1.25ml which was plenty. And only 1 treatment. One molly did die but I don't think it was due to this as she was already starting to look a little sick before I even treated the tank. ... show more
Reviewed in the United States on August 4, 2025 by must read daily

  • Be very careful when using this product!
Size: 3.38-Ounce
I suddenly had major green water that you couldn't even see the fish from algae!! My tank is by a large glass window which unfortunately doesn't aide in the algae prevention. I could not get rid of it so i tried this product. Tetra is typically the BEST brand in aquatics however, even when following the instructions, after a water change, my tank was back to green again where I literally could not see my fish 3 days later so I followed the directions and added more rather than cycling the tank. Sadly I found one of my parrot fish dead three says later when I decided to finally do a 3/4% where change to get rid of as much as possible. This product is not safe when used as recommend! Very disappointed in Tetra right now! Upon looking further into this product since it has safety warnings all over it it actually ELIMINATES OXYGEN in the tank! I do not recommend using this every 3 days as recommend on the bottle. Instead, I suggest cycling the tank about every 4 days depending on how bad your situation is, adding a good quality water conditioner using same temperature water and adding it to the tank again. That seems to be working for me so far. Also be sure when you use this to change the filter every time you cycle the tank or change the water no matter how new the filter, this will help eliminate the old algae from flowing through the filter again and putting it back in the water. Also be sure to scrub ALL decor in the tank, as well as the walls of the tank. I am even considering replacing some of my gravel but not all as its important when cycling a tank or setting up a new tank to leave some old gravel in as it contains healthy bacteria that the fish need. In conclusion, its just better to cycle the tank every 4 days or so, add same temperature water with conditioner and use recommended dose of the algae remover rather than keep adding it every 3 days. Cycling the tank does no harm... some fish breeders even do it every 1 to 2 days. Also some fish are more hardy than others so just he careful, knowing about your fish and how hardy they are can help tremendously! Hope this helps! ... show more
Reviewed in the United States on April 23, 2021 by Babbosbm

  • Ignore the negatives, They didn't follow instructions
Size: 3.38-Ounce
Worked better than expected. Read several reviews that said it didn't work and the only thing I can think of is they did not follow the directions or did not wait long enough before leaving a review. As per the directions we waited 3 days and saw a remarkable difference. However there was still a little growth here and there. We treated it a second time and there is barely a trace of algae growth anywhere. I am going to treat it 1 more time in a few days and there should be no trace left. Unfortunately I didn't think to take a before photo. But you could barely see through the glass, the plants were covered and the water was cloudy. ... show more
Reviewed in the United States on May 3, 2025 by Chris L. Chris L.

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