Aquarium CO2 Bubble Counter with Built-in Check Valve for CO2 Generator Regulator, Single Head

Work great good quality affordable I have 2 no leaks just a product overall

Not too expensive. Has a small o-ring inside it--have no idea how to use it. Anyways, installed it and there are no leaks. I would NOT recommend you unscrew the bottom. THe check valve parts will fall out and can be lost easily. Don't do it!!!

I used the dual needle valve splitter from this brand to add an output to my UNS regulator. I went with this bubble counter to save a couple bucks and I wish I had gone with the UNS one for the matching look. The first day this was set up I had a lot of water back up through my clear tubing and I assumed the check valve was cheap and faulty. I went through and tightened everything more than what I would call finger tight, and now it works as well as the UNS bubble counter. Overall it works as expected but it shows that it’s not as nice as the UNS one which is a masterpiece in form and function comparatively.

Works great and easy to install. Added to Fzone CO2 generator as 2nd output

Quality is great and have had no issues with this item on my co2 units for my plant aquarium