I have a euroreef skimmer and it skims like crazy its very quiet for the size model is es6-2+. I have a 125 gallon tank with a 30 gallon sump I am running 3 175 watt metal halides, 4 96 watt power compacts, a 25 watt aqua uv sterilizer w wiper, a cl 300 pacific coast chiller and a mag drive 18...