Heat Transfer

[theleviathan]

I just spent alot of time (and money) setting up a really complex reef. It is 56 gallons and among the assorted hardware, I'm running a Little Giant 4-MDQX pump to feed the tank return and the skimmer. I've had water in about 2 weeks now and expect to load in live rock next week. Downside- the pump is dropping about 10 degrees of heat above ambient into the water. As if that weren't insurmountable, I haven't even turned on the ~400w of lighting. I *really* don't want to buy and run a chiller but I don't want to give up the high circulation rate.
I've read that Little Giant's pressure rated pumps bleed less heat but don't have any emperical evidence. Anyone got a magic bullet for my problem? Clever way to cool the existing system? New model pump? New brand of pump?

 

[the rock]

the rock says....
that temp will likely cause you a problem, for your lighting you can run fans across the waters surface to keep it cooler. when you say ambient are you referring to the temp in your house or in the tank and how are you measuring it and what is it doing to the temp in your tank? is your tank water temp stable?