Aquarium Plant?

I'd be curious why you would want something like that? Unless you're having some type of PH problem, I wouldn't think it was necessary. I have also heard that if too much co2 is injected, it can kill your fish. Have you researched this at all? (i'm just wondering) I have a planted aquarium, and my plants are growing just fine, I wouldn't waste my money on something like that, unless there is a specific reason why. This is the first time i've actually used live plants in a while because my oscar just tore them up and redecorated and my goldfish did the same thing!! With my smaller fish the plants have "taken off" and I'm actually having to trim them back and i'm making new ones from them. I wish I had a concrete answer for you, but as I said, I don't know why you feel it necessary to begin with. Good luck! ;o) (PS: I would think an airstone would do just as much as a co2 machine....it obviously works for my tank, or I wouldn't have to trim everything back so often...but that's just my opinion)