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Theo Heaters
New aquarium heater functioning with the exclusive PTC (Positive Thermal Coefficient) technology. The first shatter-proof heater thanks to the peculiar glass tube. Free positioning in the aquarium: vertical, horizontal and completely submerged. The patented PTC heating system guarantees operation in complete security because in case of dry running the heater shuts off. UL Approved. Your heater should be between 3 to 5 watts per gallon of water.
