I am going to set up my reef tank after 20 years of it sitting in the garage. Scrubbers seems to be the wave of the future. I decided to build an upflow hang on glass scrubber with LED's. I ordered 6 Philips Luxeon ES Deep Red 3 Watt LEDs; and a 6" Makers slim heatsink. Still getting more information. I understand many people use the food containers for the lights, but with the Slim Heatsink it would appear I will not have to do that. Just attach the magnets to the Heat sink. I wanted to know it I need to make the lights adjustable?