Hey guys! so im new to the planted aquariums but not new to the addiction!! i have a Reef tank and a member of COMAS but wanting to get into the planted aquarium side of things im going to be using a 75 gallon with led lighting and have the co2 system on its ways but unsure which substrate to use. my LFS " Aquariums in Edmond" said theres a good DIY way to do it. Does anyone know how?