I agreed that a team of cleaning crew is needed....hermit crab stay in one spot for too long and they ka chiao corals a bit also....
so far, Sea Urchin and Tangs are the best....haven got chance to try sea hare yet....good choice bro...
A lot of LFS sell betta box...I bought mine from Petz mart...it has 2 sliding door...u can slide up one of the door and put some food inside the box...once ur fish get use to this box will guai guai go into the box and u can slide the door down...no stress to ur fish.