hello! Everyone! This is my first reeftank,it`s a sps tank. The tank specs, equipment, and livestock are as follows: Aquarium and Stand Tank size: Marineland corner flow 40*40*40cm Sump： H28*W36*L36 Sump & Skimmer Skimmer:AE301  BM A5 Return pump:AT104 (2000L/h) Other Water Circulation:MP10*1 WP10*1 RW4*1 Heating: 200W heater Lighting:DIY LED 75W, DIY 24w blue LED Kamoer Doser for Two little fishies C-Balance Current params (Salifert kits), stable for over a month now: KH:8.3 CA:420