Fluval M150 Submersible Aquarium Heater – 150W Heater

The Fluval M150 Submersible Aquarium Heater is a 150-watt adjustable heater designed for aquariums up to 45 US gallons / 150 liters. It can be used in compatible freshwater and saltwater aquariums when installed and monitored according to the manufacturer’s instructions.

The Fluval M-Series heater features a mirrored finish that reflects surrounding aquarium colors, helping it blend into many aquarium setups. The adjustable temperature control dial allows aquarists to set the heater based on the needs of the fish, plants, or aquarium system being kept.

Key Features

• 150W Aquarium Heater: Designed for aquariums up to 45 US gallons / 150 liters
• Submersible Design: Intended for underwater aquarium use when installed properly
• Adjustable Temperature Dial: Allows temperature adjustment based on aquarium needs
• M-Series Mirrored Finish: Reflects surrounding colors to help the heater blend into the aquarium
• Freshwater & Saltwater Use: Can be used in compatible aquarium setups
• Made in Europe: Manufactured as part of Fluval’s M-Series heater line

Product Specifications

• Brand: Fluval
• Model: M150
• Item Number: A783
• UPC: 015561107839
• Wattage: 150W
• Recommended Aquarium Size: Up to 45 US gallons / 150 liters
• Dimensions: 13" L x 1" W x 1" H / 33 x 2.5 x 2.5 cm
• Aquarium Type: Freshwater and saltwater

Best Uses

• Medium freshwater aquariums
• Community fish tanks
• Planted aquariums
• Cichlid aquariums
• Tropical fish aquariums
• Compatible saltwater aquariums up to 45 gallons
• Aquariums needing an adjustable submersible heater

Setup & Use Tips

• Install according to the Fluval manufacturer instructions
• Keep the heater fully submerged while in use
• Use a separate aquarium thermometer to monitor water temperature
• Place the heater where water movement helps distribute heat
• Allow time for temperature changes before making additional adjustments
• Unplug the heater before water changes or maintenance if required by the instructions
• Check temperature regularly, especially after setup, seasonal room changes, or water changes

Important Heater Note

Aquarium heater performance can be affected by aquarium size, room temperature, lid use, water movement, tank placement, and livestock needs. Always use a separate thermometer to verify aquarium temperature instead of relying only on the heater dial.

Choose heater wattage based on the aquarium size and temperature difference between the room and target aquarium temperature. Larger aquariums, cold rooms, or open-top tanks may require a different heating setup.

Frequently Asked Questions

What size aquarium is the Fluval M150 heater for?
The Fluval M150 is rated for aquariums up to 45 US gallons / 150 liters.

What wattage is the Fluval M150?
The Fluval M150 is a 150-watt submersible aquarium heater.

Can the Fluval M150 be used in freshwater aquariums?
Yes, it can be used in compatible freshwater aquariums when installed and monitored according to the manufacturer’s instructions.

Can the Fluval M150 be used in saltwater aquariums?
Yes, it can be used in compatible saltwater aquariums when installed and maintained properly.

Do I still need a thermometer with this heater?
Yes. A separate aquarium thermometer should be used to monitor the actual water temperature.

Should the Fluval M150 stay fully submerged?
Yes, keep the heater fully submerged while in use and follow the manufacturer’s installation instructions.

Available at Tropical Treasures Wyo

The Fluval M150 Submersible Aquarium Heater is a 150W adjustable heater for aquariums up to 45 gallons. Visit Tropical Treasures Wyo in Cheyenne, Wyoming, to shop Fluval heaters, aquarium thermometers, filters, water conditioners, test kits, fish food, live plants, and aquarium care essentials.

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