I currently have a CS Velocity T4 return pump. It is completely silent...but at a price, it runs rather hot. My water is already flirting with a temp of about 83F and I don't even have my lights installed yet! I thought I was going to be able to keep the temp lower, but once I added my skimmer and three power heads...the temp rose a few degrees.

I have heard great things about the efficiency of Eheims. Their biggest pump is the 1262 though...and it's only rated at 900 gph with an 11'6" head. Considering that my tank is a 150gal and the water would have to travel 5' up through my overflows, would this pump cut it? Any suggestions?

FWIW...I have a good amount of circulation with the 3 Koralia 4's and also have about 180lbs of LR.

Thanks.