There are arguments over best lighting for a BTA, though. I would never recommend this, but a lot of people swear that PC is good for BTA's. People I know have kept them under pc for 5 years and they are doing great. A lot of people say that MH is too much for their BTA. I'm going to do a test with one of mine, as it has split a few times and see which lighting conditions(bear in mind, a lot of water differences between the tanks, also which would skew any true testing) they do best in. Might take a while to get running, because I have to wait for the BTA clone to move onto the glass or be moving its foot to get it detached