In all honesty I don't like putting decorations inside the tank for many reason, fishes tend to hide a lot and it becomes create a habit for them. All of my tiger fish swim around when walked up to the tank and they will know its feeding time. My tank is a 65 gallon for now running on a xp3 filter and aquaclear 110 soon to upgrade to a 180 gallon. I feed them hikari and Hai Feng pellets, frozen bloodworms, and from krills, although the NTT are the only two that would eat the frozen krills but the Indos are not too picky.