ISTA CO2 Diffuser (3 in 1) - Small
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These are the most practical diffusers available. Into a single piece, you have a check valve, a bubble counter and the diffuser. Also very important is that the ceramic plate can be replaced.
3 functions in one unit: CO2 bubble counter, check valve and diffuser.
Produces bubbles as small as a mist of CO2, generating maximum possible diffusion on CO2 in the aquarium.
Undisputable quality and reliability.
Easy to install.
Use replacement ceramic item # IS00795