The Juwel Aqua Heat Pro regulated heater reliably and safely ensures the right temperature in your aquarium. Thanks to the use of high-quality silver contacts and modern design, the Juwel AquaHeat Pro control heaters meet the highest demands in function and safety and are of course TV/GS certified.technical data Juwel AqauHeat Pro 100 Wheating power: 100 Wfor aqauria from 30 - 70 ldimensions: length: 305 mm, diameter: 30 mmpower cord length: 240 cmtechnical data Juwel AqauHeat Pro 200 Wheating power: 200 Wfor aqauria from 70 - 150 ldimensions: length: 340 mm, diameter: 30 mmpower cord length: 240 cmtechnical data Juwel AqauHeat Pro 300 Wheating power: 300 Wfor aqauria from 150 - 500 ldimensions: length: 375 mm, diameter: 30 mmpower cord length: 240 cm