I have a 20 gal. reef set up. I have a pengiun 170 bio wheel (w/o bio wheel) and a Aqua C Ramora Nano protein skimmer. I am using a 24" AquaticLife T5HO light fixture. I have SPS, LPS, soft, zoes and mushrooms. Everything is doing great. You mentioned only wanting to put 1 peice of LR in your...