Rollitup

You can run 6 3590s on an HLG-185H-C500 and you should be able to get almost 500mA out of it. 94% driver efficiency. Only thing, beware of the high voltage on the DC side ~400V

Hey supra Ty for the suggestion, my driver is actually throwing 75v @ 700mA, it was a faulty volt meter that got info wrong. I am gonna try them if they don't heat up too much I might use them longer.

And could you tell me how you derive the PPFD that would help me a lot in building my veg and clone room and future expansion of flower room, hope it isn't too much trouble. Appreciate your help. Thank you

First you find dissipation wattage which is driver current * forward voltage (see the efficiency charts thread for this info).

Then you multiply dissipation W * efficiency to get PAR W emitted.

The apply a reflector/lens/wall scatter penalty. 10% for lenses, 5% for COB reflectors, 20% for HID reflectors, additional 10% for glass cover on hoods or cool tubes, 5% for wall scatter when using any reflectors.