I have an aqua Medic AT-5000 chiller. I got it last summer and used it through the warm months. I took my tank down in Jan and now have more water so I need to get a bigger one. This is a SWEET chiller. It is dual stage and will controll your heater in the winter. I paid $1,000 for it with the ARC discount and would like to get $750 for it now.
Here is where I got it and the specs.
Here is where I got it and the specs.