Precision Heater 300W

Marineland Precision Heater 300W is a high-output submersible heater designed for large aquariums up to 300 liters. The large mica heating core dissipates heat gradually across the quartz glass surface, minimizing thermal stress and preventing burns to bottom-dwelling fish that rest on the casing. It features an integrated electronic safety switch that cuts power instantly if the heater is exposed to air during water changes, preventing hazardous tube breakage.

Key Features

• 300W High Output: Delivers powerful heating ideal for large freshwater setups or marine reef aquariums.
• Thermal Protection: Automatic safety shut-off switch restarts once the heater is fully submerged again.
• Quartz Glass Tube: Heavy-duty sleeve immune to sudden thermal fluctuations and accidental physical bumps.
• 3-Position Bracket: Secure mounting bracket with strong suction cups and a clear graduated temperature window.