I just got a large purple gorgonian, and had a few questions about placement. The spot I've choosen is partially under the over-flow box, and I'm wondering about lighting. The bulk of the coral is in the open under the lights, but one branch is kinda of in a shadow under the over-flow box, is this a big deal? Second question, how far from other corals does this need to be? My lights are T5's. Thanks for your help.