Drift-free aquarium thermometer eliminates hassle of floating thermometers. Fusion Smart Temp Weighted Aquarium Thermometer is a weighted, drop-in thermometer that stays put facing forward. Unique anchoring fins keep thermometer upright and secure in gravel substrate. "Green Zone" display tells you at a glance if water temperature is within ideal healthy ranges. Aquarium water temperature readout is always visible as the thermometer will not shift position.
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