Aqueon Preset Aquarium Heater - 100W, No Adjustment Required, Up To 40 Gallons

Effortless heat for your aquarium

Meet the Aqueon Preset Aquarium Heater, a 100W heater designed to maintain a steady tropical tank temperature without guesswork. The unit ships preset to 78 degrees Fahrenheit with a tolerance of plus or minus one degree, so you can set it and enjoy your aquatic display while focusing on your fish and plants.

Built for reliable daily use, this heater is fully submersible and crafted from shatter resistant quartz glass. It includes an automatic safety shut off to prevent overheating and resets when the water cools. An LED indicator lights up to show when heating is active, giving you a quick status check at a glance.

What makes it simple

• Preset to 78 F with a plus minus 1 degree accuracy
• No adjustment required to start heating
• Shatter resistant quartz construction
• Fully submersible with auto shut off when overheats and resets as it cools
• LED indicator shows active heating
• Includes suction cups for easy mounting
• Can be placed vertically or horizontally for flexible setup
• Designed for tanks up to 30 gallons by the feature list, with listings noting support up to 40 gallons in some cases

Where this heater fits your space. If you maintain a small to mid sized aquarium, this preset heater can blend into the background while providing consistent warmth. In a well maintained tank, the temperature can stay within a comfortable range for many tropical species, without the need for constant monitoring. The result is less fiddling and more time enjoying your aquatic display.

Practical tips for setup. Place the heater in a spot with good water circulation to ensure even heat distribution. Use the included suction cups to secure it away from sharp decor and avoid blocking filters or vents. Regularly check the LED indicator and confirm the water temperature with your aquarium thermometer to keep everything balanced across the system.