led users input

[jdavid]

Im sure there will be. I can't find it now but I saw something where someone tested the PAR of two lights with 60º optics vs no optics even from different heights and recorded the results every couple inches across the bottom of the tank. With optics the par is almost twice as much in the middle area of the coverage and less on the outsides and without optic it is more even across. Yours will be overlapping on the outside area of coverage with three fixtures on your tank so your par numbers will be twice as high across the board