Abiqua
Well-Known Member
I am right to assume when going from PPF to PPFD [my cab is less than a meter [.38 actually] ...That my ppfd actually will increase above my umol/s measurement/guess?
....when PPFD is given from a manufacturer with no height, isn't that important....i.e my reading will be vastly different when taken @ 12" [25cm's]?
I am just doing a guesstimation from my lux reading and then converting to umol/s [based on a constant just a little lower than the sun]
I am running 2x 3070 AB 3k's and 1x V29 3k @ 1050mA in a 3.5 sq ft cab....@ 18" i was able to get a reading of just under 25K lux...giving me [using 50 as a constant] roughly 500 umol/s....
My cab is probably more like .35 of a meter...so is that 500umols / .35 meters = 1420 ppfd? that seems way too high???
Someone correct my math, so I can advise others, without giving them this clusterfudge ^
....when PPFD is given from a manufacturer with no height, isn't that important....i.e my reading will be vastly different when taken @ 12" [25cm's]?
I am just doing a guesstimation from my lux reading and then converting to umol/s [based on a constant just a little lower than the sun]
I am running 2x 3070 AB 3k's and 1x V29 3k @ 1050mA in a 3.5 sq ft cab....@ 18" i was able to get a reading of just under 25K lux...giving me [using 50 as a constant] roughly 500 umol/s....
My cab is probably more like .35 of a meter...so is that 500umols / .35 meters = 1420 ppfd? that seems way too high???
Someone correct my math, so I can advise others, without giving them this clusterfudge ^