kessil lens

  1. bdare

    How fast do you increase PAR?

    Hello all, I finally got around to renting a BRS par meter. I have several SPS in my tank and I wanted to be double sure about the amount of light I was giving my corals. I'm currently running 4 Kessil 360x and 2 80W T5's over a 72" 220. At the peak of the lighting schedule, the Kessils are...