[top shelf]

I hope it doesn't, I could be wrong but I dont think it'd be very happy on the overflow. Theres space between that and the rock work but idk if theres enough for it to fully expand and be happy. That spot at the top of the rock puts it almost dead center of the LEDs and about as high as it can get. I have been wondering if I can find one to sorta match the color of my rocks could i use a piece of ceramic tile in place of a flat rock for it to sit on.