All the info I have found about light requirements for different orchids is in foot-candles & I'm not familiar with that. I come from an aquarium background & am more familiar with PAR reading. Is there a conversion formula, or could some one give me an idea what PAR would be for 2500-3500 & 500-1000 foot-candles?
I'm building a large paludarium that will have orchids & trying to work out my lighting for it.