The pricing of IceProbe aquarium chiller components are
appended below:
§ IceProbe w/ 240V power supply = S$235
§ Temperature controller (optional) = S$100
that wat i found out cos i also interested in it last time
Typically, a single IceProbe will remove 6° to 8°F from 10 gallons of water, 3° to 4°F from 20 gallons,and 1° to 2°F from 40 gallons. Usually, multiple IceProbes are used in aquariums over 20 gallons to achieve the desired heat removal. For example, 2 IceProbes will remove 3° to 4°F from 40 gallons of water in a typical aqquarium.
If are looking for solution that draws low electricity,quiet and compact, then you can consider buying multiple IceProbes
here the web site of ice probe