silent skimmer

I'm looking to setup a silent reef tank since it will be in the same room as I work and can't focus which noise. I'm looking to put together a reef tank that's 40-50 gallons. I would prefer something affordable (Maybe up to $500ish or less?) that's complete if possible. I've been told to get...

So I filled up my system and got it cycling last week, and I was very pleased with how quiet everything was running. Standing next to the tank you could barely hear a thing-- 2 MP40QD and a Swine Jebao. Two days ago I flipped the switch on the Skimmer, Skimz Leopard SL183 with the new QPS pump...