IceProbe Thermoelectric Aquarium Chiller - 4 in. x 4 3/4 in. x 7 1/2 in.
This is the ideal cooling solution for small aquariums, 55 gallons or less. This quiet, reliable  efficient chiller uses advanced thermoelectric technology to directly convert electricity into cooling power.     Can be easily bulkheaded through a 1 1/4 in. hole into siphon overflows, prefilters, sumps or even directly into plastic aquariums.    Provides continuous chilling when plugged in to a power source, it does not have an on/off switch.     A separate temperature controller must be used to turn the device on or off at pre-determined temperatures.