he FluvalŪ M Series Premium Aquarium Heaters are quality manufactured in Europe using superior components and construction. Sleek and compact, the submersible heaters provide exceptional performance and unsurpassed reliability. FluvalŪ M Series heaters include an exclusive mirror technology that reflects the colours of the aquarium and enhances overall aesthetics.

The FluvalŪ M Series Premium Aquarium Heaters consists of the M50, M100, M150, M200, and M300.

The M300 is a 300-watt heater that is ideal for 300 L (80 U.S. gal) aquariums and can be used in fresh and saltwater tanks.