i have a 10 gallon reef set up with a gbta and A. Ocellaris thats hosted in it. Tha bta is doing great. When i bought it, it wasnt doing so great but its opened up and has really nice color now. both the clown and the bta are very happy. It stayed right in the spot i put it in and hasnt moved. water changes every week are a must though. topping off daily also a must. it really isnt as hard as it sounds though, and its deff. worth it.