1.Waterproof combination of aquarium lights which is independently developed by our company produced a new generation of aquarium lights, is the latest generation product which can truly achieve the industrial product standards 2.New lights can replace 3-5 times power of high-pressure sodium light ,and save energy 80%. 3. No fans built-in, which cand reduce the failure rate and reach the industrial standards . 4. IP 68, you can drop it into the water directly and more widely application than ever before Instruction 1. Waterproof combination aquarium lights are made of aviation aluminum alloy,external 45W constant current power 1PCS,higher performance,saving energy. 2. using waterproof male and female plug connections and light body are full of glue. IP 68 ,that means you can drop it into the water directly and Broader scope of products than ever before. 3. Compared with the exsiting aquarium lights, the biggest advantage is waterproof, smaller size, bigger light area, no noise, easy installation and removal. 4. The ratio between the different light specified by the customer, we suggest that the ratio (white: blue) 1:1 and 1:2 water use of blue, red and white,that provide the spectrum to meet aquatic plants needs better.