Fluval M300 Submersible Aquarium Heater – 300W

Fluval M300 Submersible Aquarium Heater – 300W

The Fluval M300 Submersible Aquarium Heater is a reliable, high-quality heater designed for aquariums up to 80 US gallons / 300 liters. Built with Fluval’s sleek M-Series mirrored finish, this heater blends into the aquarium by reflecting the surrounding colors for a cleaner, less noticeable look.

With an easy-to-adjust temperature control dial and computer-calibrated thermostat, the Fluval M300 helps maintain stable water temperature for tropical freshwater and saltwater aquariums.

Key Features

• 300-watt submersible aquarium heater
• Recommended for aquariums up to 80 US gallons / 300 liters
• Easy-to-adjust temperature control dial
• Computer-calibrated thermostat
• Durable mirrored finish blends into aquarium surroundings
• Sleek, compact design
• Made in Europe using quality components and construction
• Suitable for freshwater and saltwater aquariums

Product Specifications

• Brand: Fluval
• Model: M300
• Item Number: A787
• UPC: 015561107877
• Wattage: 300W
• Aquarium Size: Up to 80 US gallons / 300 liters
• Dimensions: 15" L x 1" W x 1" H / 38 x 2.5 x 2.5 cm

Best For

• Large freshwater aquariums
• Community fish tanks
• Cichlid aquariums
• Planted aquariums
• Saltwater aquarium setups up to 80 gallons

Important Note

For best performance, keep the heater fully submerged while in use. Aquarium size, room temperature, water movement, and tank placement can affect heater performance. Always use a separate aquarium thermometer to monitor water temperature.

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