Ok, i'm trying to build an oceanic 33gallon reef with 70-75% sps but can't decide on the lights. I originally wanted a 250watt metal halide on lumenbright reflector but I think that would heat the tank to much. I live in the caribbean, so heat is always an issue when you don't have central air conditioning. I need all your opinions to see if i keep that idea or switch to a diy 36led system with dimmable drivers or build a 24" 6bulb t5 system with 2 ballasts for dawn/dusk effect. I'm a little worried on the leds because i've done a lot of research and haven't found to much positive results. At least not from colors, but from growth and long term success. Also the t5 system can be made with 18" bulbs thanks to uvl but i don't know which bulbs to choose. I wanted 3ati b+, 2 aquas and 1 fiji purple but uvl doesn't have them with names similar to this. Help please