I have had these black box leds about a foot above my tank for about a year now. I’m currently running 75% blues and 25% whites for 4 hours at peak. Lights come on at 8am Ramp up till noon them ramp down from 4 till 8. I notice growth and color on some corals and some haven’t changed in months...
Awesome store, great selection of fish and coral. Amazing staff, They even honored a price on a fish they gave me a shipment ago. A+ in my book a definitely will be going back again.