A controller could turn the lights off and on, but it's not going to dim them.
I have a new update:
My ongoing study of these units has me convinced that they are far more powerful than we think. I am growing montipora cap and montipora sp. at 20"+ away from a dimmable fixture with the whites turned all the way down and the blues at 100%.
The corals are colorful and the anemones in the tank are also thriving.
I believe this is the reason people are losing color on their sps
. Most of the sps
in my tank took months to acclimate to this lighting, the ORA Red Planet, and an Acropora Valida being the last to catch up.
I'm running my daylights over my 300 for only 5 hours and the blues for 10, and everything is coloring up well, plus growing very quickly.
I believe the PAR meter is a very poor gauge in determining how potent LEDs are in general.