I got a 30 gallon long tank with a 20 gallon sump/refugium. The Light i have for the tank is a odyssea metal halide penant( 250 watts mh and 2X36 watt acinics and 2X2 LEDS). I got my a aqua something protein skimmer and 2 korelia 750 gph powerheads. Right now my paramateres are 8.0 ph 0 ammonia 0 nitrite 0 nitrate.