Artifical light overkill?/ yellowing leaves
Hi all! I'm wondering if anyone can help me with growing under lights. I installed a 4ft HO T5 fluorescent fixture with eight bulbs. In hindsight I think I should have found an led equivalent, but now it's up. It's primarily for a lemon tree. I have a few orchids about 24" below the fixture. When aos recommends a 6" or 12" distance from fluorescent light, are they referring to a two bulb fixture? Should I be growing much farther below with an eight bulb fixture? At a 24" distance, the light meter reads around 1000-1100 fc. I know that pale green foliage is good, but I'm starting to wonder if they're getting too yellow. The leaves on the oldest pseudobulb of my prosthechea radiata are turning yellow yellow, and I don't know if that's due to too much light or some other cultural issue. There's a Wilsonara that is starting to look a bit yellowish. This phalenopsis bellina seems a nice yellow-green, but now I'm wondering if it's too much. There's a big box clearance cattleya whose newest leaf has some purplish coloration. Should I just lower them all six inches, and see what happens? It's just for winter. They'll all go outside in summer. Thanks so much for your advice.
|
Threaded Mode
