>Is a diy co2 generator practical for a 10 gallon tank? I would think the co2 >production >would be too high in such a small system. Anyone tried this ? If so, did you >use the standard mix in a 2-liter bottle or something else. thanks I use a 2L yeast reactor on my 2 1/2G tank. I just run it through a power filter so it's a little less efficient. Karen Randall Aquatic Gardeners Association