I don't think a loaded XP3 puts out 300GPH, the addition of running it through the chiller will slow it down even more. Additionally, I'd think you'd want to plumb it seperately so you can turn it off when needed without affecting your filtration.
In the DC Metro Area? Check out GWAPA and WAMAS
I tried it with a Little Giant 'Quarium pump (http://www.drsfostersmith.com/produc...fm?pcatid=4614 ) and am very disappointed with the noise from the extra pump. The tank is in the living room so I need to keep the noise down. It is considerably louder than the Filstar XP3.
I may go ahead and try it in-line with the XP3. The head height is only about 1', so perhaps it will work ok.
Well, that won't work. Talked to Current-USA, they want flow rate between 300-700, and I know I can't get that from the XP3. I like the quiet running of the XP3, maybe I'll look into getting another canister with a higher GPH that is just as quiet.