In my 20 gal I have anubias , amazon swords, a variety of crypts, lace java ferns and one moss ball. I dose excel and the other seachem product line. BBA is receeding, no big algae outbreaks. The color of all my plants is good, and overall I'm pleased with this tank. I have 30 watts of color max bulbs over the 20 gal. Is ther any reason for me to add co2, or should I leave well enough alone? If I do diy co2, would it be wise to remove it at night so I don't accidental poison my tank? TIA linda
