24x24, 8 bulb 1 blu plus and 3 coral plus 5hours , 2 actinic 9 hrs, 2 blu plus 4 hrs, 1 radion just the blues at 20% 10 hours ramped up and down total photoperiod is 10 hours, all lights 14 inches above surface, corals about 16 inches below surface. everything is jammin pretty good. you can over do the whites pretty easily, therefor 4 or 5 hours per day full spectrum is plenty, and you can run the actinics all day with the blue only leds. since doing this my display tank took off, another note, youll have less algae issues running the whites only 4 hrs per day.... zsu
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