First.....Welcome to our forums...hope you enjoy your visit.
The lighting options are virtually unlimited...depending on space available in your canopy. I'd suggest you consider either VHO's or a combination of VHO's and MH's...if your canopy is tall enough. MH's normally need to be a minimum of 8" off the water surface.
Best bet is to research the different lighting sources carefully then decide what will work best for your particualr application.:thinking: