# HITOP HP-608 Submersible Aquarium Heater 25W 50W With Thermometer and Extra Sucker Cup

Source: https://www.ranked10.co.uk/pet-supplies/best-aquarium-heater/hitop-25w
Ranked #4 in "Best Aquarium Heater 2026: Ten Ranked on Real Watts per Litre": https://www.ranked10.co.uk/pet-supplies/best-aquarium-heater

- Price: £11.97 (checked on Amazon UK on 2026-09-08)
- Amazon rating: 4.4 from 1,069 ratings
- Buy on Amazon: https://www.amazon.co.uk/dp/B07X8V4P5L?tag=ranked10-21

The HITOP HP-608 in 25 W is our number four aquarium heater pick for September 2026, built for nano tanks from 8 to 30 litres with 2 mm thickened quartz glass. The listing records 1,069 ratings at 4.4.

Everything on this page comes from the Amazon listing rather than our own testing.

## Specification

| Field | Value |
|---|---|
| Watts | 25 W |
| Tank size | 8-30 litres |
| Range | 20-34 degrees |
| Glass | 2 mm thickened quartz |
| Cable | 1.8 m |
| Length | 18 cm |
| ASIN | B07X8V4P5L |

## Questions people ask

**What size tank is it for?**

Small fish tanks of 8 to 30 litres.

**How thick is the glass?**

2 mm, about 33 percent thicker than 1.5 mm tubes.

**Does it hold temperature?**

Within around 2 degrees of the set value.

**What is in the box?**

The heater, a sticker thermometer and three suction cups.

**How long is the first warm up?**

Around 24 hours for a glass heater, per the manual.

**What is the rating?**

4.4 across 1,069 reviews.