Hey Kat, I havent been on these forums for a while but the last time I was, this was what I was working on, but money got tight and I've never actually finished the set up. LED's are pretty cheap to DIY. The par they produce is similar to metal halide. I'm gonna PM you a link to the big forum. The thread has been split twice, I've read the whole thing. It's quite a read about 130 pages. From what I remember Soundwave's LED's were so bright it bleached some of his corals. On another note, the set up has been running for over a year and he has had significant SPS growth.