AquaEl\'s unique ULTRA HEATER range make up the first smart aquarium heaters on the market. These heaters feature a precise (±0.25°C) electronic thermostat, as well as in-built thermometer, overheating alarm and the SHS system with shatterproof housing. Their careful design means they are safe to operate in tanks with very sensitive organisms and are burn-proof. ULTRA HEATER 25: Power: 25W Aquarium capacity: 10-25 L Height: 16.3 cm ULTRA HEATER – The first smart aquarium heaters.New in 2020 –Smart Heating System*. A microprocessor controllerselectsthe lowest heating powernecessary formaintaining the set water temperaturein the aquarium. When necessary, the microprocessor increases or decreases the power to maintain the set temperature. Using the Smart Heating System allows forlower temperature amplitudeof aquarium water thanks to the morestable operation of the device. In addition, the SHS positively affects thedurability of the heating element and the heater’s lifespan.The heater is programmed using avery convenientONE-TOUCH systemfeaturing asingle button and an LED ringindicating current and set temperatures.The electronic thermostat offersunique precision of +/-0.25°C, maintaining constant temperature in the aquarium, ensuringthermal comfortfor eventhe most sensitive aquarium species.Temperature control range from 20 do 33°C makes it possible to use the heater in the treatment of many fish diseases, including the so-called “fish smallpox”.ULTRA HEATER features also abuilt-in warning system in case of water overheatingin hot weather.Shatterproof plastic housingmakes the ULTRA HEATER water heaters perfect for tanks with large, strong fish and even with water turtles. The devices are completely safe and will not cause burns to even such sensitive fish as catfish and rays.The ULTRA HEATER range encompasses 6 models ranging from 25 to 200 W, and are available in 3 lengths, which allows precise adjustment to aquarium size.ULTRA HEATER devices are the most advanced products on the market intended for heating water in aquariums.Heating aquarium water has never been so intuitive and safe. See for yourself! Features: One Touch System – convenient temperature control with one button Built-in thermal switch – the heater is automatically switched off in case of excessive temperature increase in hot weather Fully electronic – no parts of the thermostat are prone to mechanical failure Built-in electronic thermostat – displays current water temperature in the tank using acolour-display Crack-resistant enclosure made of special plastic Precise electronic thermostat (+/-0.25°C) Heater operation and current temperature indicated with colour LEDs Suited for operation in freshwater and saltwater aquariums The ULTRA HEATER deices are manufactured according to the most stringent European safety standards, ensuring safe operation and maintenance. Each unit is tested and calibrated at the AQUAEL laboratory, ensuring precision. Made in Poland *SHS is available with 75 – 200W heaters manufactured from the beginning of 2020. In order to check whether the heater is equipped with SHS, check the manufacturing date indicated on the plug.