2Aquarium Submersible UV Light Sterilizer Pond Fish Tank Germicidal Clean LampFeatures:1. filament for high performance and energy-saving.2. Adopt explosion proof quartz glass tube for high transmission of ultraviolet ray.3. Powerful suction cups for adjusting position freely.4. Safe water-proof design for totally submersible use.5. Independent power switch is great for safer use.6. Suitable for controlling malignant in aquarium and fish tank.Specifications:Wattage: 5W or 7W or 9W or 11W or 13W(Optional)Plug Type: USVoltage: US: AC110-120VBody Material: Quartz GlassCable Length: Approx. 145cm or 57inchSize(DxL):5W or 7W: 19mm x 185mm or 0.74inch x 7.28inch9W: 19mm x 220mm or 0.8inch x 8.66inch11W or 13W: 19mm x 240mm or 0.8inch x 9.45inchNotice:1. The sterilizer should be placed in filter tank, can't put it in the fish tank directly.2. The product is for submersible use.3. In use process, please cut off the power supply and stop using immediately if the lamp enters water.4. The ultraviolet radiation will cause direct harm to human skin and eyes, please don't expose to use.Usage Suggestion:1. Please choose the suitable lamp according to the size of your fish tank and filter-tank.2. 3-4 times for a week, do not use it exceeds 2 hours per day please according to the actual situation.Package including1 x Aquarium UV Sterilizer Lamp2 x Suction Cups Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store