Precision Aquarium Heaters for 500L–900L Tanks
£54.02 inc. VAT (£45.02 ex. VAT)
- Premium quality at just £54.02 inc. VAT
- Free UK delivery on all orders
- 30-day no-quibble returns policy
- Secure checkout with buyer protection
Why Choose AquariumPet
Precision Control for Large Volumes
Maintaining a stable temperature in a 500L to 900L aquarium requires more than just raw power; it requires intelligent management. The AquariumPet Pro Digital system separates the heating element from the controller, allowing you to monitor temperatures at a glance from outside your cabinet. The titanium construction ensures rapid heat transfer while remaining completely resistant to the corrosive nature of marine salt or the humic acids of South American blackwater setups.
Safety and Redundancy
For systems over 500L, we recommend a redundancy strategy. Our controller can manage multiple elements, ensuring that if one fails, the other maintains the biological minimum. The integrated thermal fuse and dry-run protection provide an essential safety net, automatically cutting power if the water level drops below the sensor during maintenance or due to evaporation.
Optimised Installation
Designed for the British fishkeeping hobby, our system includes long 2-metre cables to reach from the depths of a 6ft display tank or a deep sump back to your control board. The external temperature probe features a suction-cup mount for high-flow areas, ensuring the controller reacts to the true temperature of the water column rather than 'dead spots' behind decor.
Technical Specifications
- 500W / 800W / 1000W Options
- 18°C - 34°C
- ±0.5°C
- Grade 1 Titanium
- Dual LED (Set Temp / Current Temp)
- 2.0m (Power & Element)
- NTC High-Precision Sensor
- CE, UKCA, RoHS
Price Comparison
See how our price compares across UK retailers
| Retailer | Price | Delivery | Warranty |
|---|---|---|---|
| AquariumPet UKBEST | £54.02 | FREE | 12 months |
Prices checked 8 May 2026. Prices may vary.
Customer Reviews
Bought the 1000W system for my 800L Discus tank. The temperature hasn't moved more than 0.2 degrees, which is vital for these sensitive fish. The Glasgow winters are harsh, but this handles it easily.
The dry-run protection saved me during a water change when I forgot to unplug the heater. Usually, that would be a cracked heater and a ruined day, but the AquariumPet unit just cut out safely.
Finally, a heater with a cable long enough for a large cabinet! The build quality of the titanium element is far superior to the glass ones I've used previously in my reef sump.
Excellent bit of kit. My only minor gripe is the suction cups for the probe could be a bit stronger, but the actual heating performance is flawless on my 600L setup.
As a marine biologist, I appreciate the accuracy. I've verified the probe against lab-grade equipment and it's remarkably consistent. Perfect for stable reef temperatures.