Description
The ANS Easy CO2 Meter (Type 4) Simple is a CO2 system component for planted aquariums.
Key Features
- Essential for providing carbon dioxide to aquatic plants
- Promotes healthy and vigorous plant growth
- Compatible with standard CO2 regulator setups
ANS Easy CO2 Meter (Type 4) for Planted Tanks
A CO2 meter, or drop checker, is how you read whether your planted tank is actually getting enough carbon dioxide rather than guessing from the bubble count alone. This simple Type 4 unit sits in the tank and gives you a visible reference for your injection rate, which matters because too little CO2 starves plants while too much stresses fish and shrimp. For anyone moving from a low-tech setup into pressurised CO2, it is one of the most useful five-dollar safeguards you can add.
Place it in an area of good flow but away from the diffuser’s bubble stream so it reads the dissolved level fairly, and give it time, as a drop checker lags behind real conditions by an hour or two. In our warm 27 to 29 degree water plants can be hungry, so watch the reading across the photoperiod and ease your bubble rate up gradually while keeping an eye on fish behaviour at lights-on.
See our full CO2 systems range, and read our beginner CO2 setup guide with our CO2 diffuser guide to balance the whole system.

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