Fluval T-Series Electronic Heaters

Fluval T‑Series Electronic Heaters (50W–300W)

The Fluval T‑Series heaters bring modern electronic heating to your aquarium, combining accuracy, safety, and convenience in one sleek package. These fully submersible heaters are designed for both freshwater and marine use, with features that help maintain stable water temperature without constant monitoring.

Each T‑Series model includes a digital sensor system to monitor and regulate water temperature 24/7, minimizing fluctuations. A 360° indicator light ring shows you at a glance whether the heater is actively heating (red) or in standby (blue). 

Safety is built-in: the heater features automatic shut‑off if it’s not submerged, protecting against dry running. It also includes a heater guard to reduce risk of breakage.  You can adjust temperature via a large grip dial (from 22 to 32 °C / 72 to 90 °F) without removing the heater from the tank. 

Mounting is flexible: these heaters can be positioned vertically or horizontally, and come with a suction mount for securing in place. For extra flexibility, there’s an optional spacer kit to create distance between the heater and tank glass or other equipment, helping with heat distribution. 

Here’s how each size corresponds to aquarium capacity:

• T50 (50W): up to ~50 L 
• T100 (100W): up to ~100 L 
• T150 (150W): up to ~150 L 
• T200 (200W): up to ~200 L 
• T300 (300W): up to ~300 L

Whether you're running a small setup or a larger tropical aquarium, the T‑Series gives you precision heating with built-in safeguards and a clean, modern design. It’s a smart choice for anyone who wants dependable performance with less worry.