The ISTA in-line external heater is designed for vertical use in most aquarium applications involving water hose of the specified diameter. The ISTA External Heater must be used in a vertical manner for correct operation. The most common application is for use with canister filter, however the ISTA External Heater is easily adapted for use in almost any situation where heated aquarium water is required, such as with wet/dry sump pumps. The ISTA External Heater is easily installed by cutting the tubing and connecting the two parts of the tube to each side of the ISTA External Heater.For reduced maintenance, it is recommended that the ISTA External Heater be installed within the filter`s output assembly. As most canister filters are not designed to bear weight, it is recommended that the ISTA External Heater be properly supported by the use of the attached loop to avoid stress on the output assembly.
External Heater 500W