I only use mine to check on bulbs being old and wearing out.
I run 1K HID's at 6 ft centering. I over lap light footprints that way and can have a non stop line of plants, if I so choose. Good for SCROG or SOG. Plenty fine for not too.
I run quantum boards a little hotter than I should, but they are great. Because I run them hotter than I should, I would like to make sure that everything is still optimal.