These lights are very well made. They come with two mounting methods. A screw in clip or magnetic tape. I used the tape. I degreased the light and roof of the Viv and it has stuck very well. The LEDs are bright. I am using the 1ft strip in my 4ft Viv. I mounted it running front to back about 6ins from one end. This is perfect as it give a lighting gradient allowing my snake to choose how much light it wants. Finally I use a timer so it I on for a few hours after the day light has gone off. I also comes on for an hour in the morning. Well worth the money.