My Soft Coral Tank

My Soft Coral Tank Hi, MY TANK SPECIFICATION: Tank Size : 30 inch L x 18 inch W x20 inch H Sump : 25 inch L x 14 inch W x18 inch H Lightings : 250w 20000k HQI (Giesemann) Skimmer : H&S 110 Chiller : Arctica 150 Flow Rate : Vortech M40W & Tunze 6100 with single controller, PowerJet 7500 Water change 1/6 once per week. Temperture keep between 24c-25c Ca 380-400ppm KH 8-9 ph S/G