Yes for my 30 Gal i was planning on using play sand from lowes and some flourite from pets mart.. I want Co2 but I do not know much about it, my lfs [petsmart] Does have a co2 setup for a 20 gal tank.. Do you think it would work for a 30? and also I have to have co2 for my plants to stay green and grow? Thanks,and also Yes i was talking about the forground plants that send our small ones to make a carpet type look, There called crypts? can they be found at a lfs?