You need an aquarium heater to keep your aquarium at a constant and controlled temperature, because the correct temperature in winter is very important to keep fish and other aquatic plants, our aquarium heater provides the right temperature to help you The fish and other sea creatures stay away from stress and disease. The product is made of high- quality materials, durable, corrosion- resistant and environmentally friendly. The temperature can be adjusted from 20° C to 34° C while keeping the temperature of the aquarium uniform. Explosion-proof, fast heat transfer, safe and reliable, and energy-saving.Specification:Name: Aquarium heaterMaterial: Plastic+Metal+Glass Temperature range: 20°C～34°CPower: 25W, 50W, 100W, 200W, 300W Package includes: 1 x aquarium heaternotes: Customers please rest assured to buy without worrying about the plug, we will provide you with the national standard of the adapter according to different situations to ensure its normal use.Precautions:1. When using this heating rod, the water must be immersed in the heating rod and not exposed to the surface of the water, otherwise the power supply will be burned out2. When cleaning the sink, changing the water or performing maintenance, cut off the power 10 minutes in advance