Interpet Adjustable Aquarium Heater

If your aquarium suffers from inconsistent temperature, this aquarium heater provides precise, reliable control for tropical and marine setups. The adjustable fish tank heater is supplied set to 24°C and delivers 200 W of heating power, making it suitable for tanks in the 90 to 180 litre range where maintaining a steady temperature matters for sensitive species and planted displays.

The heater is fully submersible and double insulated, built with heat and shock resistant glass for extra safety in aquarium environments. A positive click-control lets you make small, repeatable adjustments instead of guessing dial positions, so you can hold the temperature you want without frequent readjustment. In practice this means quicker recovery after water changes and more consistent conditions between room temperature shifts.

Use this heater in larger tropical or marine community tanks where a single mid-power unit is appropriate. For best results place it where tank circulation can carry warmed water around the display, and monitor temperature with a separate thermometer to confirm even heat distribution. Compared with external or digitally controlled systems, this submersible glass heater offers simple, robust heating with straightforward manual control.

Key Features

• Adjustable temperature – positive click-control with a 24°C pre-set for easy, precise tuning
• 200 W output – suited to aquariums approximately 90 to 180 litres
• Fully submersible and double insulated – heat and shock resistant glass for safer in-tank use
• Simple to use – straightforward installation and manual control without complex electronics

Frequently Asked Questions

Is this heater suitable for saltwater and freshwater tropical aquariums?

Yes. It is designed for tropical and marine aquariums, providing precise temperature control for both freshwater and saltwater setups.

What aquarium size is the 200 W model suitable for?

The 200 W model is recommended for aquariums from 90 to 180 litres, ensuring adequate heating for tanks within that range.

How do I install and adjust the heater in my tank?

Place the fully submersible heater inside the tank submerged; use the positive click-control to set temperature. It arrives set to 24°C, so adjustment may not be necessary.

Is the heater safe for my fish and what safety features does it have?

It is double insulated, made from heat and shock resistant glass and fully submersible, offering extra safety for tropical and marine fish.

Does it come with a warranty and what are the heater dimensions?

Warranty covers manufacturer faults. Heater dimensions are 31.5 cm x 2.5 cm x 2.5 cm; size suits tanks up to 180 litres.

Check the recent prices for Deltatherm Adjustable Aquarium Heater 200W below.