Hi Anna,

Not sure of the exact foot candles, but you are probably throwing 5000-8000 lumens with 4/40's. More than enough light for a phal. If hanging vertically, I'd think you would need to be turning the phal 1/4 or 1/2 turn every few days to keep things orientated correctly on the plant. Be sure to change out the bulbs every 12 months..

BTW: West Central Ohio here. I grow @30 phals during the winter under 3 sets of 4/40's on a light cart and under some LEDs. They go outside on a partially shady east facing patio once things warm up in mid to late May (hint, hint...)

Good luck,

Bob

Hi Bob,
Thank you for the very helpful info. I bet that your Phals are absolutely beautiful when in bloom. I think that I'll try another Phal in the spring if I keep this one alive until then. It's a white one and I'd like to try a pink one. I might try putting it outside in the spring but I'm also wary of the bugs and animals since I don't have a protected area. Thanks again for your help.
Anna