Aquatop GH Submersible Glass Aquarium Heater | Adjustable, 50W to 300W

The Aquatop GH Submersible Glass Heater is a simple, dependable analog heater: set the temperature on the top knob and the indicator light shows when it is heating. The double-insulated glass body is fully submersible and mounts on the glass with the included suction cups. Seven sizes from 50 to 300 watts cover tanks up to 75 gallons, freshwater or saltwater. Shop all our heaters and temperature control.

Features

• Easy to set. Top knob with a printed temperature scale and over-wind protection.
• Indicator light. On while heating, off once it reaches your setting.
• Fully submersible. Mount it low and at an angle for even heat.
• Fresh or saltwater. Double-insulated, high quality glass.

Choose Your Wattage

Setup

1. Mount the heater with the suction cups where water flows past it, fully under water.
2. Wait 30 minutes after placing it in the tank before plugging it in, so the glass can adjust.
3. Turn the knob to your target and confirm with a thermometer over the next day.
4. Always unplug and let it cool for 30 minutes before taking it out of the water.

Specifications

Pairs Well With

• Aquatop Smart-Temp Digital Thermometer
• Aquatop GT-001 Floating Glass Thermometer
• Aquatop Pisces 25W Pre-Set Heater for nano tanks

FAQ

Which wattage do I need?
Use the tank size in the table. For a cold room or a large tank, go up one size or use two heaters.

Does it shut off if the water drops?
No. Keep it fully submerged, and unplug it during water changes that lower the water level.