1 / 6This JSD RS series aquarium heater is a top-selling essential accessory for fish tanks and aquatic habitats on Alibaba and Amazon, available in multiple power options: 25W, 50W, 100W, 200W and 300W to match tanks of different sizes (20-80cm). It works with AC 220V-240V, 50/60Hz voltage, compatible with most household power supplies worldwide. Featuring simple temperature adjustment and double constant temperature insurance, this submersible heating rod is stylish, practical and easy for daily maintenance, friendly to both aquarium beginners and professional hobbyists. Built with high-quality glass tube and heating wire, it ensures even heat distribution and reliable performance. The included suction cups allow secure attachment to the tank wall, and the 0.9M power cord offers flexible placement. With solid build quality and easy operation, it is widely favored by global aquatic product buyers. It is an ideal heating solution for freshwater aquariums, ornamental fish tanks and various indoor aquatic environments, helping maintain stable water temperature for tropical fish and aquatic creatures.