4.please don't contact it with the power source before finishing the assembly of all the spare parts.
5.the product can kill the harmful germs and algae so that it will make a suitable&healthy living conditions for the ornamental fishes.
6.uvc is harm for the eyes and skin.please do not watch uvc.
7.please don't put the product in the water.
8.please do not connec the uv light with the power scource if there is no water circulation.
9.in order not to influence the water pressure against the body shell.please do not equip the switch between the body shell and the pipe of the aquarium