Tetra Pond Barley & Peat Extract Clear Water Treatment, 16.9-oz bottle

By Tetra
Rated 3.8333 out of 5 stars
$15.02Chewy Price
$16.19Chewy Price
$14.27Autoship Price
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About This Item


  • Safe for use with fish and plants
  • Treats algae and algae blooms
  • Concentrated formula treats more water than other brands
  • Do not use in ponds with invertebrates or crustaceans
  • Algae control solution for ornamental ponds with plants & fish

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Fish TypeKoi & Pond FishKoi & Pond FishKoi & Pond FishKoi & Pond FishKoi & Pond Fish
Aquarium TypePondPondPondPondPond

Questions & Answers

4 Customer Questions

can I use this in an aquatic turtle habitat
Answer by ChewyMay 05, 2021
When used as directed, this water treatment is safe for pond life and plants.

I have loaches, Cory cats and snails. stupid question, will I need to remove my snails and for how long? thank you...
Answer by ChewyOct 12, 2018
It's not recommended to use in ponds with invertebrates or crustaceans.

Can I use this in a betta tank?
Answer by ChewySep 21, 2022
This water treatment is formulated specifically for ponds. It is safe for all freshwater inhabitants but darkens the water while the barley works on the algae. Tetra has not done any research on its use in aquariums.

I have dogs that like to play in the pond will it be safe for them
Answer by ChewyJun 21, 2021
This is an all natural product and is safe for dogs. Please keep in mind that drinking from ponds can give dogs upset tummies, as ponds often carry bacteria and protozoa.

ReviewsWrite a Review

Rated 3.8333 out of 5 stars
12 Ratings
Would recommend to a friend

12 Customer Reviews

Rated 1 out of 5 stars
By Sheltie5 on Aug 11, 2021

Failure to Perform

Ordered this product as a safe form of algae control for my garden pond. I followed the product dosing instructions and it did not work. I have more string algae than what I started with. I can't recommend this product.

Rated 5 out of 5 stars
By Geri on Aug 1, 2019

Truly the best for my 36 gal aquarium

I had always had trouble keeping my tank clear and algie free. My brother told me to get Simply Clear with Barley. The product I was using was discontinued and I couldn't find anything to replace it. My tank was getting algie bad. I talked to a Chewy customer service rep and she went way beyond the call of duty to search and find this Liquid Barley to replace what I had. I can't imagine not having this. It actually works and I can now leave the light on all day and enjoy the tank now. Thank you Chewy so much.

Rated 5 out of 5 stars
By Barb on Sep 21, 2019

Great Product

We actually use it for our outside water fountains to keep the alge under control. It works great.

Rated 3 out of 5 stars
By rosco on Jun 22, 2019

Didn’t work well

I tried this in my outdoor pond. It didn’t really do much. I added a few more doses the second time and it didn’t change much either. I noticed the surface of the water seemed better but the overall look was still cloudy and mucky

Rated 5 out of 5 stars
By Cats on Jun 21, 2019

Works fast!

Great product! Began to work immediately. Water looks great

Rated 4 out of 5 stars
By splinter1 on Oct 31, 2018

Not knowing

Trying to find something I can use that's not harmful. Thought this was natural. Found out after placing the order that I shouldn't use with loaches and snails. The struggle is real!

Rated 5 out of 5 stars
By Lynne on Jun 3, 2018

Pleasently surprised

I was expecting it to be at least 5-7 days for my order to arrive but it was here in 2 days and the product does exactly what it says. I also couldn't find a better price. I would recommend Chewy.com to all my friends.

Rated 2 out of 5 stars
By CindyG on Dec 9, 2017

Did not work on our pond as suppose to!

We tried the product but it did not clear our pond up as was suppose to!!!

Rated 1 out of 5 stars
By Pond on Oct 21, 2017

Did nothing for my pond

No change at all. I used another brand in the past that was fantastic but is no longer available. This has the same name but didn't work for me.

Rated 5 out of 5 stars
By Mamafirebird on Aug 24, 2017
Top 100 Contributor

Excellent for indoor 75gal goldfish tank too

This stuff works GREAT as a tank clarifier! Barley mats are too big for an aquarium; this provides the essence of barley and helps keep my tank in balance. Label cautions against using with invertebrates, but it's never caused problems with our Mystery Snails. After every tank vacuum session and water additions, I add this stuff to help settle out the water chemistry. Highly recommended!