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The HC-820W controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium
The 24/7 feature starts with a cool lit Dawn
The StingRAY Clip light features 12x7
The FugeRay also features moonlights on a separate switch
Safety First: High-Temp Heater Guards
Finnex Digital Aquarium Controller HC-820W Series Finnex Power Supply The HC-820W controller uses anThe HC 820W controller uses an advanced digital processor that monitors and controls the water temperature in your aquarium. The heating controller receives temperature data from the remote sensor in the aquarium. The remote sensor contains no bi metallic contacts to arc, corrode or wear out. This allows the HC 820W to have precise control, keeping the water temperature stable while avoiding wide temperature swings common with low quality aquarium