You don't even need lights for FOWLR they will be okay in the dark with little lighting. Why even bother to get PC its just more money and more on your electric bill. I'm planning to add LED lights instead not the High Output ones but just regular LED ones that will help save on Electric even more. If its next to a window its even better use sunlight although might have problem with algae growth as long as you got a lot of tangs and fish eating algae it should be okay.