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Neptune Systems AquaController Apex Temperature Probe
Fluval E 300 Watt Electronic Heater
Aqueon Submersible Aquarium Heater 300 Watts Up to 100 Gallons
Orlushy Submersible Aquarium Heater100W Adjustable Fish Tahk Heater with 2 Suction Cups Free Thermometer Suitable for Marine ...
PULACO 25W Small Aquarium Betta Heater with Free Thermometer Strip Under 6 Gallon Fish Tanks Preset Temperature 78