Hello all, 2 fold question about refugium lighting. I have a regium integrated into my sump with a dsb. I just put cheato in it. My light is an ai prime. I happened to have one laying around from a previous tank. Question 1: what wattage should I be running it at? The light maxes out at 40 watts. Question 2: how long should I be running the light for? Any help would be greatly appreciated!

