Saw this little addition online,I placed an underwater led puck under the cave i built in the corner of my scape.so far ive had a couple of issues with it.it leaked so i put teflon tape on the screw down,and the remote does not work through the water/rock.i plan on leaving it on all the time to see how long the aaa bateries last.I zip tied it toa removable piece of rock for easy access...we wll see if its worth the trouble,i love the way it looks though