CarlWebbIII
- 7
- 3
Thank you for the quick response! Ive checked ppfd as well. I have a “vsense” i believe its called. Plus theyve been under this same light their whole life except their first week. Same intensity and distance. And the problem has just started at the end of week 4.im gonna say light burn / stress lower the intensity of your light to maybe 60 to 75
download the photone app and check your par/ppfd
Gunna agree with this back that light away / and turn down if you have timer ability to and give them a few days to recoverim gonna say light burn / stress lower the intensity of your light to maybe 60 to 75
download the photone app and check your par/ppfd
The mother plant was started as an “organic” run with gaia green and DTE amendments. But at week 4 instead of a top dress i switched over to the same nutes using now as i flipped them to flower. Im crazy stumped because i ran 3 different strains in that run and didnt have a single problem with any of the strains. Its just the clones. Only difference is like i said the clones were started off with liquid nutes from the cut.I won't say it isn't the light intensity, but there may be another possibility. Some trace nutrient deficiencies can cause a similar appearance. Magnesium and zinc are both elements in chlorophyll. To me, the yellowing appears more pronounced toward the leaf tips, and that indicates a zinc deficiency. I'm not familiar with the nutrients being used or the water, though. Nevertheless, lack of chlorophyll seems to be involved, so reducing the light intensity is likely to help. Was the mother plant grown with the same nutrients and if so, did it have a similar problem?
I havent taken any ppm or ec readings actually, good thought! I did just get a new ph/ec pen right when this started to happen. But no i actually havent even used the ec or ppm option on my new pen yet. What should i be testing, like runoff or input? Flushing? And what would be concerning numbers?Do you have a / any ppm reading(s) ... what actions have you taken since noticing the start... how much time / days has elapsed before this post.
Also my initial thoughts were either iron or zinc but my tap water i use definitely has a healthy amount of traces.I won't say it isn't the light intensity, but there may be another possibility. Some trace nutrient deficiencies can cause a similar appearance. Magnesium and zinc are both elements in chlorophyll. To me, the yellowing appears more pronounced toward the leaf tips, and that indicates a zinc deficiency. I'm not familiar with the nutrients being used or the water, though. Nevertheless, lack of chlorophyll seems to be involved, so reducing the light intensity is likely to help. Was the mother plant grown with the same nutrients and if so, did it have a similar problem?
Back it down to 20 percent, they don't have a developed root system yet.I think I would reduce the light intensity. Back it down by about 20% for a week. See if the plant starts to pray. Then gradually increase the light.
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