I am wanting to light up my pool, the wife wants just white, I would like the option of other colors too. What type lights are the majority here using, if the light has the option to be all white and can be changed to other colors while wife is not in would be great. Most use battery or AC. I know they have floating lights and hang over the side. Don't know how many lights would be adequate for 15 by 26 pool. Would guess 1 at each end. Heard about the rope lights that go under the top cap, that sounds real neat, anyone have these and can explain the pros and cons? All help is needed, I like to use experience, but I have none. So I rely on your experience