Exo Terra Clarity & Odor Control Moss Ball for Turtles

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About This Item

Details

  • Helps keep your tank’s water crystal clear by reducing organic matter buildup and also reduces odors.
  • Helps condition the water while blending in with your tank's décor.
  • A special absorption resin draws in and traps phosphate, nitrite and nitrate.
  • Creats ideal conditions and better water quality.
  • Treats 10–20 gallon terrariums and effective for up to 2 months.

Instructions

Learn More About Exo Terra From Our Team of Experts

Questions & Answers

20 Customer Questions


I usually have a moss ball in my fish tank. Can the one be used with fresh water fish?

Answer by ChewyJul 09, 2020
This moss ball can be used for freshwater fish.

Can you use this instead of using a water filter?

Answer by ChewyOct 15, 2018
While this product can help with water quality, it does not serve as a replacement for proper and adequate filtration in your aquarium.

Hi, I already bought this item but I’m just confused at to weather it is supposed to sink of float. I’ve had this in my tank for about a week now and it is still floating and won’t sink. I don’t know if I’m doing anything wrong or not?

Answer by ChewyApr 20, 2020
Customers have reported the moss ball floating and sinking, depending on the individual tank.

Do these create algae?

Answer by ChewyMay 14, 2018
This moss ball is intended to keep your tank’s water crystal clear by reducing organic matter buildup and also reduces odors. It will not produce any algae.

4.2
Rated 4.2 out of 5 stars
364 Ratings

146 Customer Reviews



Rated 5 out of 5 stars
By Jennifer on Jan 10, 2026

Must have for stinky turtle tank

Really helps manage the stink of the turtle tank.

Really helps manage the stink of the turtle tank.


Rated 2 out of 5 stars
By Krystl on Oct 14, 2025

Not used for intended purpose.

Turtles love them as a new toy. The Moss Balls do keep the order down but does not keep the water clear.

Turtles love them as a new toy. The Moss Balls do keep the order down but does not keep the water clear.


Rated 5 out of 5 stars
By Matthew on Sep 7, 2025

Always good from chewy prices and deliverys

Will always good threw chewy best prices for name brand and always 20 30 sometimes 40 dollars cheaper for the same thing from a petrol or petsmaet

Will always good threw chewy best prices for name brand and always 20 30 sometimes 40 dollars cheaper for the same thing from a petrol or petsmaet


Rated 2 out of 5 stars
By Alexandra on Oct 3, 2025

Not real moss

I was hoping it would be real moss. I've had moss balls before in my tanks, but nothing like this.

I was hoping it would be real moss. I've had moss balls before in my tanks, but nothing like this.


Rated 5 out of 5 stars
By Lercy on Jun 9, 2025

Controls Odor

I use six of these in my 150 gal red-eared slider tank, and it has greatly helped in keeping odor to a minimum. I change them out every two to three months depending

I use six of these in my 150 gal red-eared slider tank, and it has greatly helped in keeping odor to a minimum. I change them out every two to three months depending on my sniff-test findings. Some float, most sink -- either way, it works, and for that I am grateful.


Rated 5 out of 5 stars
By Josh on Oct 27, 2025

Crystal clear water

Made my water crystal clear the next day after putting it in

Made my water crystal clear the next day after putting it in


Rated 5 out of 5 stars
By Pam on Jul 21, 2025

It Works

I put this in my tank and the water stay clear which allow my to be able to wait at least 30 day to do a full tank clean.

I put this in my tank and the water stay clear which allow my to be able to wait at least 30 day to do a full tank clean.


Rated 2 out of 5 stars
By Dustin on Apr 19, 2025

Not sure if it really works

I threw it away after a couple weeks. It looks nasty in the water and the water got so nasty that I had to change it all out. This is not a bad review on the product

I threw it away after a couple weeks. It looks nasty in the water and the water got so nasty that I had to change it all out. This is not a bad review on the product. I just could not see any evidence that it was working as it's supposed to


Rated 4 out of 5 stars
By Renee on Sep 21, 2025

ease of use

it does indeed keep the smell down.

it does indeed keep the smell down.


Rated 5 out of 5 stars
By Darlene on Jun 25, 2025

Fun

My turtle plays with the moss ball. I have noticed, her water seems clearer.

My turtle plays with the moss ball. I have noticed, her water seems clearer.