Prime Tower Inline Chiller by Current. Model #2646. 1/3 HP. Optional heating mode. A separate heating element (NOT INCLUDED) can be plugged into the 110V heater electric port near the fuse. Includes custom-made stand/cabinet. Has worked perfectly for 6 years. My last fish died of old age, after nearly ten years, so I'm shutting down the tank. Sad for me, great opportunity for you. Normal operating temperature on the 65 gal. tank was between 60 and 68 F. No problem, even in summer, for this work horse of a chiller. The custom cabinet is designed to keep excessive dust and moisture from effecting the efficiency of the unit. This protection, along with frequent cleaning, and occasional back-flushing have kept this chiller looking and functioning like new. $195