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Re: 220 watts of light on a 120 gallon?

Chuck Gadd said....

>What do you mean by DIY co2?  If you mean a yeast bottle, it won't help
>in a 120g tank.  Plus, with a yeast setup, you don't control the bubble

I use DIY CO2 on several tanks including a 180 gallon. The latter
grows plants very well, all types, forty species+, using two 2-liter
bottles changed at alternating intervals of ten to twelve days. Of
course a pressurized tank is easier, cheaper, less time-consuming,
and generally more stable unless a disaster occurs. But it does work.

Dave Whittaker
Gloucester, Ontario
ac554 at FreeNet_Carleton.ca