Originally Posted by
waters10
Hey, need some help!
I just bought a CO2 regulator as an impulse buy (it was 1/2 price!) when I know very well I should've waited, specially for the management approval.
But anyway, after a few nights sleeping on the couch, I'm now looking for a CO2 tank. The question is, what size should I get for my 85g tank (medium planted)? I'll be using a solenoid with a timer (~8-10h/day) and I'm planning to reach 20 or so ppm, using a drop checker.
From what I read, it costs about the same to refill the tanks, so I know the bigger ones make more sense on the financial side. But how long will each tank last on my setup approximately? I'm thinking more in terms of the hassle of getting it refilled too often.
Right now I'm leaning towards a 5lb cylinder because I think it'll last quite a while and being cheaper, I don't have to spend a lot more nights on the couch ... :D But if a 10lb cylinder makes it a lot more sense, I'll think about it.
thanks!!