My Optronics Floating Fish-N-Lite says 26,000 candlepower.
What it doesn't say is how many amps per hour it draws.
When trying to measure how many lumens equals a certain amount of candlepower, just remember that 12.57 lumens is the equivalent of 1 candlepower.
They do have a Green LED/UV LED light : OPTRONICS, INC. (scroll to bottom) which says it draws less than 1/2 amp per hour. That's with 7 green lights shining down & 16 UV lights around the top to light up fluorescent lines or floats. It just doesn't say how many lumens (or candlepower) it puts out.