The Aqua One Nano Preset Heater is a compact and sleek design that is only 25w, so perfect for smaller volumes of water, up to 25l.

At just 15cm in length, this is a nano heater than would not only be perfect for smaller aquariums, but also ideal for quarantine set ups, or salt water mixing containers, keeping the perfect temperature for a smaller volume of water.

Complete with LED indicator light that turns on when the unit is actively heating, so you can check when its working, this comes with a strong protective casing, and is designed to be fully submerged. It has a preset temperature of 26C, which cannot be changed.