🐟【 Fast Clean 】- 254nm wavelength light help to remove the green in the fish tank, pond, make it clear. And it can dissipate the odor in the fish tank and reduce the number of water changes in your fish tank. 🐟【 Pectect Size 】- Perfect mini size 3x1 inch, fits most low water filters, post filters, top filter boxes, etc. Do not worry about the size is too long and too big to put in the fish tank, more flexible and convenient to use. Suitable for some small fish tank small filter. 🐟【 Timer Function 】- The upgraded version comes with a timer (3h, 6h, 12h, 24h), making the entire cleaning process easier than ever. It is recommended to use it every 3-4 hours every 2-4 days. The bulbs are waterproof, and the plugs and timers should be kept away from water sources. 🐟【 Superior Silica Glass】-Glass products, handle with care, do not shake, it is easy to cause a short circuit.Please Note that this light only clean water green in the water, but can not clean the black precipitate attach on rock and tank. fore purchase. Instructions: Please do not watch the UV lamp for a long time, and avoid the UV lamp irradiating the skin. When using the aquarium disinfection lamp, please put it in the filter, or use an opaque plate to separate the lamp from the fish to avoid direct light shining on your fish and harm them, but please make sure that the water can pass through the plate. Rutloy Mini 3W Timer UV Aquarium Clean Light Algae Removal Light Fish Tank LED Light Aquarium Green Clean Waterproof Light for Pond Tank Aquarium