Thanks, I am running 3 250 watt XM 20k halides on magnetic ballasts with 2 t5 supplements. I run a Geo 618 calcium reactor, a Reef Fanatic ATO, 2 Mag 7 returns, 2 modded Mj1200s and a modded K4 for flow. I have 2 media reactors one with zeolites and one with carbon. I am running NeoZeo probiotics and I replace all evaporation with kalk.