I have been searching for a light or our pool but I didn't want something that operates off of electricity or batteries and everything solar that I keep finding pretty much floats which is not what I'm looking for... I found this on Amazon today, it connects to the return jet and the lights operate off of hydropower and require no batteries or solar or electricity kind of like my hydro powered fountain
https://www.amazon.com/gp/aw/d/B0196KKY1E/ref=ya_aw_od_pi?ie=UTF8&psc=1
https://www.amazon.com/gp/aw/d/B0196KKY1E/ref=ya_aw_od_pi?ie=UTF8&psc=1