V²Therm 100 suitable for heating aquariums up to 120 litres/26 UK gallons. Digital heaters are the latest, quality addition to TMC's V² range. V²Therm Digital Heaters incorporate advanced digital micro-processing technology, displaying real time water temperature via a "ClearView" LED display. These slimline heaters are digitally adjustable for precise temperature setting, are fully submersible and have excellent heat diffusion properties. They also have a toughened glass heater element incorporating a reinforced plastic guard and are easy to install and maintain.