Join Date: Jan 2012
Location: Indianapolis, IN
what you want to use is something like miracle gro organic potting soil, which won't have any chemical fertilizers in it. it still has all the good stuff to make your plants grow: organic material like rotted plants, chicken poo, mulch... just no chemicals which would potentially be really bad for your tank. i've seen it at walmart before, and lowe's, and pretty much anywhere else that carries gardening supplies.