Overview Designed for larger home aquariums, the AHJ Aquarium Heater delivers dependable warmth for tanks around 75 to 120 gallons with a 500W rating

Its integrated PID temperature chip is directly connected to the nickel-chromium heating element, allowing the thermostat and heater to sense water temperature quickly and regulate it with precision

Expect a more consistent, comfortable environment for your fish, bettas, turtles, and other aquatic life

Key benefits at a glance Accurate temperature control ±1 °F ensures water stays near the target setting, reducing temperature swings

External controller allows adjustments without wetting hands; red LED indicates heating and blue LED indicates constant temperature

Fast heat up and stable operation help reach and maintain the desired warmth efficiently

Smart safety you can rely on Overheat protection, over-temperature, and dry-run safeguards protect the tank and inhabitants

If the water is missing or the temperature exceeds 94 °F, the LCD displays HH and flashes to remind you to check

Auto-shutoff engages when no water is detected, preventing dry burning scenarios

Build quality and design The heater is submersible with a thick quartz tube and a protective case designed to deter algae buildup and accidental contact

A long 1

5 m (4

75 ft) UL- cable supports flexible installation while keeping the unit safely away from delicate fish

The quartz tube and protective housing help minimize contact with small fish and keep the glass surface clean

Saltwater and freshwater rated to support mixed or dedicated setups

Setup, test, and warranty To ensure reliability, AHJ subjects each unit to a 72-hour in-water test before shipping

If you are unsure which wattage fits your tank, measure the tank internal dimensions (L x W x H) to estimate volume, and contact our support team for guidance

The product includes a 12-month warranty and accessible after- service to address questions or concerns

FAQ Q: Is this heater suitable for both saltwater and freshwater tanks

A: Yes, the AHJ heater supports both saltwater and freshwater setups

For sizing, check your tank volume and contact support if unsure

Q: How do I know which watt size to choose

A: For 75–120 gallon tanks, 500W is

Measure tank dimensions to estimate volume and consult support if unsure