coralife for 20gal Long
so im thinking of buying the coralife 30' 2x18 t-5. i might get like 38-40 watts off the lighting for my 20 gal long. will that be to strong without running co2? if i dont run co2 what would i need to keep up healthy plants and growth? so far in my tank i have rummynose tetras, neon tetras, otos, corys, red cherry shrimps, anarchis, java moss, and anubia nana. please help me out. if i dont run a co2 do i need to buy any liquids for the plants? will it harm any of my fishes? and do i just add the liquids in when i do a water change? thanks in advanced! have a nice day!