Heaters · Adjustable, electronic
hygger Precise Aquarium Heater 50W
Manufacturer-rated for aquariums of 5–10 US gal; adjustable 59–93°F.
A 50 W quartz glass heater with a controller on the cord: you set it from 59 to 93 °F in half-degree steps, it reads the water with two probes, and it beeps if a probe fails, the heater is out of the water or it overheats.
Consider: The controller stays dry outside the tank and remembers your setting through a power cut, but the glass tube has no guard around it.
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US version, item HG253. Check what’s in the box before you buy.
Tank size hygger rates it for
5 to 10 US gal
Choose your tank to see where it falls.
Check it against your tank →Specifications that affect fit
- Manufacturer capacity
- 5–10 US gal
- Power
- 50 W
- Supply voltage
- 110–120 V / 60 Hz
- Dimensions
- 5.9 × 1.2 × 1.2 in (L × W × H)
To see what it costs to run, enter the watts on its label and your daily hours in the electricity cost calculator.
Before choosing this model
- Keep the whole heater at least 2 in under the water and clear of the gravel, as hygger says.
- Choose the mode: precise heats when the water falls 0.5 °F below your setting, ECO waits for a 1 °F drop.
- hygger gives a temperature tolerance of ±2 °F, so the water can settle up to 2 °F either side of your setting: set the middle of your fish’s range and check it with a thermometer in the tank.
Our buying guides size it for these tanks:
A heater rated for your tank can still fall short in a cold room: see how to size one.
Check it against your tank → Something not working? See the troubleshooting guide.
Included items & upkeep
- heater with controller
- 2 suction cups
- user manual
Plan for the routine work
- Wipe it with a soft cloth every 2 to 4 weeks so scale doesn’t build up, as hygger advises.
- Look the glass over when you clean it, and replace the heater at once if you find a crack.
To budget for replacement media and supplies, use the first-year cost calculator. For how often and how to clean it, follow the maker’s manual.