I am getting everything together for my 220, I want to do sand because I like the look alot better and I think my puffer would enjoy it more. From experience, which have you found to be the best kind of sand to use? For reference, I will be using 2 Emperor 400's and 1 Rena XP3 Canister. As of right now I will be moving 3 clown loaches, 3 red hooks, and 1 Mbu into the tank. Any help is appreciated.