The Aqueon Preset Aquarium Heater 50W is designed for ease of use with no manual adjustments needed! It maintains a steady temperature of 78, ideal for most tropical fish species. This heater is fully submersible, made from durable, shatter-resistant quartz glass, and includes a safety feature to prevent overheating with an automatic shut-off. It comes with suction cups for flexible placement, either vertically or horizontally in your tank. A red LED light indicates when the heater is in operation. Available in various sizes to suit different aquarium volumes, Aqueon provides a comprehensive selection of aquatic products to help you create and sustain a thriving underwater habitat. From tanks and filters to lighting and fish care essentials, we support both beginners and experienced hobbyists. At MorphMarket we are dedicated to innovation in aquarium products, ensuring that every item enhances your passion for fishkeeping. With Aqueon, its always about prioritizing the well-being of your fish.