Its a little hard to see but I think it is from high nitrogen. I have over fed a few times with N and it will cause the leaf edges to turn up and the tips to turn down or curl under line the last picture. I have also had high amounts of N turn the center of the new growth bright yellow from locking out other nutes. I have had a few grows that only the tips of my leaves burnt like the first picture and they were fine, don't know if it was too much Nitrogen or a lack of calcium. I would try a light feeding of Cal Mag and see if it stops after a week. I would also try using a little less water more often because the more moisture in the soil the less concentrated the available nutes in it and if it is a high N like it looks it will help. It is a little hard to tell from the pictures but are the leaves also a darker green than normal?
New Grower Yellow tips at my Critical Jacks and no answers...
- Thread starter Clayton
- Start date
Hi again,
So we did all what has been adviced, we will see how the plants will do the next days. Also we sorted them today now its good (smallest plants to the left, others right, also put the lamp a bit higher, they growing like hell.) It might be that the soil was a bit too hot, so we watered a bit more with more drain. The Plants are not old, 4 weeks tomorrow and I made a lot of watering mistakes in the past, so I tried to do it better this time and someone told me to water them the first three weeks as less as possible to make the roots grow better...
We have to water them more now, once a week is not enough, plants are big now and need more water.
I gave the plants trace-nutes the last time, no fertilizer, there was calcium and magnesium and all other stuff inside except of N, P, K (Pottasium) . But only the half dose. Guess it was realy too hot, the lamp a bit to close and the soil a bit too sharp. I hope they get no further yellow spots.
Thanks for your help, nice eve, Clay
So we did all what has been adviced, we will see how the plants will do the next days. Also we sorted them today now its good (smallest plants to the left, others right, also put the lamp a bit higher, they growing like hell.) It might be that the soil was a bit too hot, so we watered a bit more with more drain. The Plants are not old, 4 weeks tomorrow and I made a lot of watering mistakes in the past, so I tried to do it better this time and someone told me to water them the first three weeks as less as possible to make the roots grow better...
We have to water them more now, once a week is not enough, plants are big now and need more water.
I gave the plants trace-nutes the last time, no fertilizer, there was calcium and magnesium and all other stuff inside except of N, P, K (Pottasium) . But only the half dose. Guess it was realy too hot, the lamp a bit to close and the soil a bit too sharp. I hope they get no further yellow spots.
Thanks for your help, nice eve, Clay
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