i have a hagen aquaglo 18000K, a spectramax 6500k full spectrum super daylight lamp and a ge chroma50 all on a 29g planted tank with diy co2. is this enough light? also, how big should the bubbles be on the co2? i have a steady stream of bubbles but hey are small. the are running through a airstone in a gravel vacuum reactor. does any1 see a problem with using rapid rise yeast? sorry, i got a little off topic. opinions please?