We have a light that broke and we didn’t want to spend a lot on another ,these light a 34 by 24 foot pool perfectly.You need 2 for a pool this size we will get one for the spa in the future .The unit comes off if you have a pool cleaner that climbs the walls ( you have to take the main unit off and leave the attachment plate )lots of color options and a timer long enough if you have high tiles .Remote control ,easy to install pull off backing and stick ,different for above ground .