I do not agree that the light was to bright ect, and is what originally burnt some of the plants.
I use a 1000w
Hortilux HPS at no more than 24 inches on seedlings, and often times even closer than that. But the temp at the canopy never exceeds 82 degrees. I also always keep a small breeze on them. 24 hours a day.
Im also a firm believer in 24 hours veg vs anything else. On a regular HID I will turn it off for 3 hours every 2 days to cool the ignitor. Been doing this 40 years. I also use DE Gavitas, and
Gavita 1700e LED-1700 umolā¦.
The light being used is 245w actual watts, and are not the best diodes. The very best LED are 1/3 more efficient vs HID Single Ended.... 1000w
Hortilux HPS is the standard for SE-HID-1600 umol.
At best the light is close to a 300w HID, and that's being generous.
I myself would get the light much closer, put a small breeze on them, keep the temps 78-82 degrees, and all the fresh air possible. I would watch overwatering, and mainly water a diameter only slightly more than the leafs measure from tip-tip. I would not saturate them. If they are wet longer than 2.5 days, its to much water.
I would get a cheap moisture-ph-light meter at Lowes, use it and never let the needle reach DRY, always slightly above... LOW MOIST, and NEVER TO THE DRY LINE
They are in no way anywhere near healthy, nor big enough to take cuttings. They need to be growing vigorously, so the cuttings will be healthy