What do I need for a cleanup crew? I have a 36 gal. bowfront with 34 lbs. LR and 50 lbs. LS, 2 Seabae clownfish, 1 brittle starfish, 4 turbo snails, 1 bumblebee snail and 6 bluelegged hermit crabs. Is this enough or should I have more? Also what would go good with this setup? I'm running 2x 20...