So i picked up 30# of really nice FL rock to add to my tank. Fast forward a few months my tank looks like a planted tank. I kinda like it but I need something to eat some of it. I know a tang is not a viable option as the tank is a 40B but what eats plants and macro. Stock like 1 clown 1 sixline wrass 1 pseudo 1 green cromis. assorted snails 2 blue legs and a fighting conk and some corals.