Bro , I have a 1/2 HP Artica titanium heat sync Compressor Class chiller, currently keeping my 5 footer at 25 degrees. You interested?
I didnt place it outside too, I put it on a high chair and face the fan near a window to keep the heat out.
Its a damn good and fast chiller, its about 2 years old, just got Artica to do a servicing.
You can check out Reef Depot's website for the specs.
Selling cheap.
SMS me 96271471 Dan