Ok so I just registered to this site because it seems like this forum knows a lot about planted tanks hence the forum name. alright anyways I'm going to be getting a 55 gallon tank soon and I want to do a dirted tank. I already got a 20 gallon tank full of fish and plants and will move some over to the 55. My question is if I use miracle grow organic matter and cap it with gravel in the back and in the front a area with sand so my cories can play and dig around will it work I'm using the gravel in the back so nutrients can get down to the soil.