
I built a CO2 system for a series of plant nanotanks powered by a single cylinder. This bubble counter was the most expensive I've bought from Revain but was the clear winner. The plastic is thick and strong, and the brass makes it rust-resistant and durable. The built-in check valve is a great advantage. Other bubble counters leak or break easily. After trying other brands I'm buying three more so all my tanks use the same quality bubble counter.

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