Marineland 25 watt Visi-Therm Heater

CODE: AS03050


In Stock

The Marineland 25 Watt Visi-Therm Submersible Heater is perfect for freshwater and marine aquariums.

Set and maintain proper aquarium water temperature with ease. Convenient, user-friendly features include top-view scale and high-visibility sliding scale for dual visual confirmation of temperature adjustments. "Click Set" temperature control knob lets you accurately dial in desired temperature with ±1°F precision with every click. Enhanced heater design boasts electronic thermostat and an advanced heating element for superior heat transfer and durable performance. Marineland Visi-Therm Heaters are for submersible use in fresh or saltwater aquariums.

Submersible aquarium heater with advanced heating element

Redesigned heater boasts superior heat transfer and durability

Set and maintain ideal water temperature for aquarium inhabitants


  • 7.5" Tall
  • For aquariums up to 5 gallons
  • LED lights when heater is operating
  • Double strength glass casing for extra durability
  • "Click Set" Temp: Gives precise control to accurately set temp to ± 1°F with every click.
  • High-Visibility Temperature Setting: Easy-to-view sliding scale tells the exact temperature setting and new top view shows the setting at the dial.
  • Triac Equipped Thermostat: Switches heater on and off with lower voltage for superior reliability and performance.
  • Mounting Bracket: Advanced mounting bracket securely attaches to glass and provides three window positions to view temperature display from multiple angles.
  • Advanced Heating Element: Flattened mesh heating element surrounding a mica core for superior heat transfer with enhanced durability.
  • Advanced mounting bracket securely attaches to glass and provides 3 window positions to view temp display from multiple angles
  • Marineland
  • Marineland is the world’s leading brand of innovative equipment and environments for consumers wishing to create the ultimate aquatic showcase. Committed to fish-keeping success for more than 40 years, the brand also is the professional’s choice for commercial display systems and scientific research. The Marineland brand is owned by United Pet Group, a global manufacturer of premium pet products, a division of Spectrum Brands.

  • More products by Marineland

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