Fluval Disposable CO2 Cartridge Fish CO2 Care, 3 count

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About This Item

Details

  • Replacement cartridge for the Fluval Supply Set Fish CO2 Care (sold separately).
  • Helps to keep and maintain a healthy aquarium.
  • Provides a consistent stream of carbon dioxide.
  • Promotes plant health and greenery.
  • Disposable.

Instructions

Frequently bought together

Questions & Answers

2 Customer Questions

What diameter of thread are these CO2 canisters? 5/8" or 3/8"?

Answer by Chewy • Aug 05, 2025
The 80 g and 95 g Fluval CO2 cartridges have a 5/8″-18 UNF thread.

How often do the cylinders last if installed correctly?

Answer by Chewy • Dec 19, 2025
If installed correctly, Fluval Disposable CO2 Cartridge Fish CO2 Care should last 2 to 3 weeks.
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3.5
Rated 3.5 out of 5 stars
6 Ratings
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1 Customer Reviews

Rated 1 out of 5 stars
By David on Apr 18, 2024

Don't bother

Avoid the Fluval CO2 Products....all of them. I have spent so much on these products and they don't work. Invest in a real CO2 system.

Avoid the Fluval CO2 Products....all of them. I have spent so much on these products and they don't work. Invest in a real CO2 system.