How to Attach Aquarium Heater to Glass or Acrylic Tank
Use suction cups on clean glass; on acrylic, use acrylic-safe clips or a holder because suction cups often slip.
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How to Determine Heater Size for Your Fish Tank
Use 3–5 watts per gallon for a typical tropical tank, then adjust for room temperature, tank shape, and heater count.
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Aquarium Heater Wattage Chart for Different Tank Sizes
Use 3–5 watts per gallon for tropical tanks, then adjust for room temperature and tank size. Includes a wattage chart and two-heater setup tips.
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How to Tell if Your Aquarium Heater Thermostat Is Broken
If a heater keeps pushing water more than 2°F (1°C) above or below its setpoint after you verify the reading with a second thermometer, the thermostat is likely failing.
