a guy at a lfs reccomended a good quantity of sand in the tank if i want plants. does anyone know anything about this? if it is necessary, how much? i'm setting up a 120 gallon and i have 125 # of gravel for it. would throwing in 50 # of sand under the gravel do the trick? should i return a bag of gravel and put in more sand? thanks a lot. by the way- im planning on having amazon sword, corkscrew grass, java moss and maybe some hornwort or moneywort. nothing to exotic or strange
