Ista CO2 Bubble Counter

Finally, a bubble counter that actually stays sealed and doesn’t leak after a few weeks—the clear tube makes it super easy to count bubbles from across the room. My plants are already showing better growth now that I can dial in the CO2 consistently.

Honestly, the most helpful part is how clear the markings are—I can finally dial in a steady one bubble per second without squinting. It fits perfectly inline on my small tank's tubing, and it's been holding up great for over a month now. A solid little piece that takes the guesswork out of my CO2 s

Bubbles per minute are finally something I can actually count instead of eyeballing, and my drop checker has stayed green since I dialed it in. The little unit seals tight on my tubing with no leaks and hasn't needed any fiddling. Perfect for my 20 gallon.