# hygger Fish Tank Heater, 300W Submersible Aquarium Heater with Intelligent LED Digital Display Thermostat Controller for 115-300L Freshwater Saltwater Tank

Source: https://www.ranked10.co.uk/pet-supplies/best-aquarium-heater/hygger-300w
Ranked #8 in "Best Aquarium Heater 2026: Ten Ranked on Real Watts per Litre": https://www.ranked10.co.uk/pet-supplies/best-aquarium-heater

- Price: £34.19 (checked on Amazon UK on 2026-09-08)
- Amazon rating: 4.4 from 54 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B0DZ1Z2G39?tag=ranked10-21

The hygger 300 W is our number eight aquarium heater pick for September 2026, with triple temperature probes, an LED controller and anti dry protection for tanks from 115 to 300 litres. The listing records 54 ratings at 4.4.

Honesty note: the energy label field prints E, flagged as listed. Everything on this page comes from the Amazon listing rather than our own testing.

## Specification

| Field | Value |
|---|---|
| Watts | 300 W |
| Tank size | 115-300 litres |
| Range | 20-34 degrees, 1 degree steps |
| Probes | Three temperature sensors |
| Safety | Anti dry and overheat cut offs |
| Memory | Power off memory |
| ASIN | B0DZ1Z2G39 |

## Questions people ask

**What size tank is it for?**

Freshwater and saltwater tanks from 115 to 300 litres.

**How accurate is it?**

Within about 1 degree, per the listing.

**What is power off memory?**

It keeps your set temperature after an outage.

**What does ER mean?**

The heater is not fully in the water and has shut off.

**Why is the energy label an issue?**

It prints E, flagged as listed.

**What is the price?**

£34.19.