You sent me another item. It was an ultraviolet light meant to disinfect things. The electropoles on the bulb and the power supply are not protected from moisture in any way, you can even see two exposed terminals. If I leave this in the water I will definitely kill all my fish and possibly injure myself. This thing is dangerous. ***Update: I received a replacement for the correct light. I still give it a 1 star rating. I plugged it in and submerged it in the aquarium for about a day and the light stopped working. I don't know what's wrong with him. I refuse.
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