The IM AUQA Gadget Helio Heater is a powerful and reliable aquarium heater designed for saltwater reef tanks, capable of heating up to 100 gallons of water. It features two independently controlled 200-watt elements that work together to maintain precise temperature control within the tank. The Helio Smart Controller provides accurate temperature readings with an adjustable range from 59°F to 95°F and includes high and low alarm settings for added safety. This heater is equipped with a remote sensor for optimal placement, ensuring even heating throughout the aquarium. Additionally, it offers error codes for quick troubleshooting of any issues that may arise during operation.