I've a resun 280 chiller for sale at $120. Using it for my 2ft CRS tank. Temperature set at 24 to 25 degree celcius. It take only aboiut 15 min to cool down the tank temp from 25 to 24, and idle about 45 min before running again. It is quite a efficiency chiller in my opinion. Putting it up for sale due to recom. Interested please sms me at 98245547. Collect at sembawang. Physical condition is reasonable good. No damaged part.