hello, I am finally considering the purchase of an hydroponic chiller for my res. Temperatures rarely exceed 70, but I have to be sure....Algae is my arch nemesis. Does anyone have a favorite brand or type? Yes I know polar bear chillers work really good...they also cost twice the amount of others and appear to have a monopoly in the hydro market. Are aquarium chillers any different? I am loooking at Coralife chillers, Jbj and sealine. Any thoughts? I plan to go for about a 1/10th hp size to save on electricity while providing a 20 degree temp drop.