i have a diy light hood that has 29, 27w compact florescent day light bulbs. regular pea gravel type substrate. and no co2 just yet. i will soon but would like suggestions for both with co2 and without co2. i also have 3 tinfoil barbs that don't mess with my plants as long as i substitute them with lettuce and broccoli and spinach. i also dose with fertilizers that are suggested on this site.