Ok grasshopper...how many square feet is your grow space? Then divide your about 250 dissipation watts by that number.
Yes. About 50 dissipation watts a sq ft and somewhere above 25 PAR watts a sq ft is a lot a photons. Do you have a par meter or lux meter?
I was going to ask what you had been growing under. I have a blurple cheap led panel that is gathering dust with my hid ballasts and reflectors. I am continually amazed at the performance of 15 PAR watts a sq ft and a measured average 700 ish ppfd at the canopy. I think if this is your first go at white cobs you are in for a pleasant surprise.
Interestingly enough, your average PPFD will be around 1200 µmol/s/m^2, but the way you came to that result is completely wrong.
Aleah can show you how to calculate down to the photon. I'm just saying 25 par watts a foot will likely turn your girls bleached blonde! And you can get great results with far less. Are your drivers dimmable?
hi