Lighting advice needed. I matched the lux rating of my favorite LFS some time back but the corals are just ok. Recently I moved way more to the 10k spectrum and turned down the 5 k levels with the hopes that algae would not like it. Corals seem to love the light. Not sure it made any difference in algae. I do not have a big algae problem to solve, just fine tuning. I am sure a par reading would be the way to go buy I do no have a way to read it so here I am.