Wanted to try out CO2 in my planted aquarium without a large investment. This kit serves that purpose quite well. A big problem with this kit is the shut off and needle valve. The check valve just doesn't work. Fully closed it will still waste carbon dioxide and bleed all night. Maybe it should do that to relieve pressure, but I'm not sure. Well, the needle valve, that thing is a nuisance. It needs constant adjustment and it just seems to go from not enough bubbles to too many with not much in between making it difficult to get it right. It will go from a bubble to a ton every 2 seconds at the slightest turn. This is a useful kit, it gives me CO2 for about a week before I run out and my plants are thriving. Great kit to start with, not sure if I should look for better valves or scrap the whole system to install a CO2 tank.
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