HITOP 50W Adjustable Aquarium Heater

The HITOP 50W Adjustable Aquarium Heater (model HP 608) is a submersible thermostat heater for 6–15 gallon freshwater and saltwater aquariums. It has a compact 7-inch body and a 5ft power cord.

Adjustable range

Set the temperature anywhere from 68 to 93 °F. Once set, the built-in thermostat turns the heater on and off as the water changes, keeping it at the set temperature within ±2°F. A sticker thermometer is included so you can confirm the reading.

Thicker glass

HITOP uses 2mm thickened quartz glass, which it describes as 33% thicker than the 1.5mm glass in normal heaters. Thicker glass is more resistant to cracking and corrosion.

Mounting

Install the heater at any angle with 2 suction cups, and HITOP includes 1 extra as a spare (3 pcs total). Suction cups harden over time, so the spare is useful. The understated color keeps it from standing out in the tank.

Safe use

• Keep the heater fully submerged while powered on.
• Unplug it before any water change.
• Angle it near the filter outflow for even heat.
• Check the thermometer daily for the first week.

Calibrating the dial

Dial markings on any analog heater are a guide. Set it near your target, wait a day, then compare with the thermometer and adjust in small steps until the tank holds steady.

HITOP offers a 1 Year warranty and after-sales support.

Compare

For a similar adjustable heater with a preset 25W option, see the AQUANEAT 50W heater. For a digital readout in a small tank, look at the HITOP compact 25W digital heater.

Who it suits

Keepers of 6–15 gallon tanks who want a straightforward adjustable heater with thicker glass and a spare suction cup.

If you keep fish that need cooler water in summer, unplugging the heater is easier than turning the dial all the way down, and it avoids having to recalibrate later.