I know this is an old post but wanted to input on these without starting new thread. I got these lights for xmas and put over my 90 (have 2 fixtures). So far I have seen growth in hammers, torches, chalice, mushrooms, pretty much everything in my tank. I run blues 100% and whites at lowest setting ( 25% I think). I don't have the app fixture so I have to use the remote style. It only sets lights on timer 6/12/18 hour options. Using external timer resets light to both at 100%. I tested that for two days and by second day after 8 hours, nothing opened and lps corals looks very bad. Since then everything has bounced back and I can't be happier. Just my 2 cents for anyone looking into buying these.
