Fluval T50 Aquarium Heater 50w gooseneck or HOB filter

or HOB filter

growth and development of corals

when placed in light and with added CO2

The obvious ideas are often the best

Fluval T50 Aquarium Heater 50w gooseneck or HOB filterFluval T Electronic Aquarium Heater 50W Submersible T Series heaters combine electric accuracy, reliable monitoring and several safety features to conveniently maintain desired water temperature. Fully electronic heating with 24 7 monitoring for stable temperature control. 360 degree indicator light ring displays heat mode clearly from any angle. Added safety with auto shut off and heater guard. DIGITAL ACCURACY Advanced electronic sensor accurately