Tetra No More Algae Controls Algae Growth for Water Clarity, 8 count

By Tetra
Rated 4 out of 5 stars
$4.84Chewy Price
$4.60Autoship Price
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About This Item


  • Controls existing algae and prevents new growth
  • Leaves water and aquarium clean and clear
  • For use in glass and acrylic aquariums
  • In convenient, premeasured fizz tabs
  • Treats up to 160 gallons

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Frequently Bought Together

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Tetra AquaSafe Plus Freshwater & Marine Aquarium Water Conditioner, 16.9-oz bottle
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Buy 2, Get 3rd Free- Mix & Match

Total Price: $11.75

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Fish TypeTropical FreshwaterTropical FreshwaterBetta, Cichlid, Goldfish, Tropical FreshwaterTropical FreshwaterCichlid, Goldfish, Marine Fish...
Aquarium TypeFreshwaterFreshwaterFreshwaterFreshwaterSaltwater, Freshwater

Questions & Answers

14 Customer Questions

Will this affect loaches or snails? Thank you in advance...
Answer by ChewyMar 01, 2018
We recommend that you remove them from the tank while treating. You can return them to the tank after you have finished the last dose, completed a 25% water change and have left the new carbon filter cartridge in your filter for at least 8-12 hours.

You said to use it with the water but remove charcoal during use. how long should you wait to put charcoal back in filter?? confused?
Answer by ChewyJul 24, 2019
The carbon filter and charcoal can be returned after 6-8 hours.

how often i can use this ?
Answer by ChewyMay 27, 2022
For regular maintenance, use once a month or as algae growth starts to appear.

Do I drop this right in the tank or in the filter?
Answer by ChewyDec 11, 2020
It is recommended to add tablet to aquarium water. Remove carbon from filter during use.

ReviewsWrite a Review

Rated 4 out of 5 stars
19 Ratings
Would recommend to a friend

19 Customer Reviews

Rated 5 out of 5 stars
By Kim on Nov 12, 2023

Algae treatment

Works sometimes

Rated 5 out of 5 stars
By Jose on Sep 10, 2022

Turtle Tank Must Have

I keep my turtle tank outside. During the morning and afternoon the sun shines on my turtle tank causing algae to grow like crazy. After two days the tank is dark green with algae. I tried many anti-algae products, but none would work. Finally I tried a tablet of No More Algae after cleaning my tank water and it worked! I added one tablet for three days and the water stayed super clear for at least 3 weeks!! It had no effect on my turtle or the fish I feed her. It even cleared up the filter! Definitely 5 Stars and will continue to use this product forever!

Rated 5 out of 5 stars
By Storm81791jsz on Jan 17, 2023

Definitely recommend

I cannot recommend this product enough! One treatment removed ALL the algae from my tank. Very happy.

Rated 5 out of 5 stars
By ZeNx on Aug 17, 2022

Excellent Product!

Excellent Product! No More Algae, even after only a couple of doses.

Rated 5 out of 5 stars
By Priceless on Apr 4, 2022

Awesome product

We used this for our 55 gallon tank and it was magic. Cleared up the fogginess right away. We change filters quite often but this tablet helped make the tank prestine.

Rated 3 out of 5 stars
By Pumpkin on Nov 10, 2020

No more algae

I previously had No More Algae from another company name. I’m not sure if Tetra brand is going to work as well yet, but if the ingredients are the same it should. The previous brand worked wonderful and I was surprised. I use them in my fish tank and in the little pond that I have on my deck. I hope that they are the same it is wonderful not having to empty the tanks and clean them.

Rated 1 out of 5 stars
By TheEmz on May 19, 2020

Nope nope nope

This didn't work at all, did not remove any algae. In fact, within 2 days of taking the filter out and putting the tablet in there is even MORE algae in the tank. The instructions also don't even say how long to keep a filter out or how often the tablets can be used. So, no to this product. Do not recommend.

Rated 5 out of 5 stars
By Alyssa on Mar 17, 2020

Works great

I love these tablets! I used to have to clean algae off the walls of my tank and accessories every week. Now, there's never any algae on the walls and a minimal amount on the plants and rocks. I only use half a tablet each week since I have a 5-gallon tank, and I appreciate that the tablets are super easy to break in half (meaning they don't crumble all over the place). I just pop half a tablet in each week and they've helped so much with algae. I will continue using these! I haven't noticed any adverse effects in my fish's behavior or health.

Rated 1 out of 5 stars
By Jenwall on Sep 15, 2019

Wrong stuff

I could not even use this stuff to try it. I have live plants and it says not to use with live plants. It also would have taken the whole box to treat my tank. So I cannot recommend or recommend this product.

Rated 5 out of 5 stars
By TankTop on Aug 18, 2019

It works better than expected

Not only did this product prevent algae growth it cleared up already existing problems. It worked for more than a month before I needed to use it again.