1Improve the fish tank water quality turbidity, water plant quick growing, bacteria breeding problems. 2Continuous using every day, to maintain good water quality, reduce fish incidence, algae removal and sterilization. 3Deep waterproof design and prevent electric leakage, more safe to use. 4High light transmittance, safety and explosion-proof, effective sterilization. 5Removable housing, easy for cleaning, convenient and practical.