I'm back! And guess what. I have redone a lot of things. First off, gave away half of my fish. Decided to do a loach tank. AND! I bought a 35 gallon hex tank to upgrade to for a while! I want to do sand on the bottom instead of gravel. How coarse or fine of sand do I want for a planted tank? I've never had sand before so I am unsure where to start. I know I don't want a powder but not sure where to go from there.