I’ve had the same thing happen, except my flower lights are Blackstar 180w... I’m new, so I thought I’d probably made mistakes, but it seemed odd that things went wrong within days of changing lights.

The same thing has happened on my new grow. However, I have some plants grown from seed and some from clones under the same lights. The clones are yellowing, but the seed plants are fine! In fact, I have one seed plant and one clone in the same pot, showing different results. I wonder if clones are less hardy. I've tried all the iron /magnesium /sulphur deficiency stuff.

Please keep posting your findings, I would really like to get this sorted.
redleb Reviewed by redleb on . Led's light bleaching? on a legal medical grow the panels, (one veg, one bloom 240w blackstars) are roughly 16-18" above several plants, two in coco, two in fox farms, and two dwc.. all of the plants are stunted, all of the plants have dead foliage. Ph is good, temp is good, ppm is good.. several of the plants have white patches on their leaves, like all the color has left. most of the plants cotledons have dried up like a nitrogen defficiency... they have been treated with micronute foliar sprays.. canazyme, Rating: 5