taco leaves

[mimistow]

Hello, im growing critical 2.0 (dinafem) in soil ,indoors with the biobizz lightmix soil and biobizz series ferts following the nutrient schedule of Biobizz. I m about 7 weeks in from seedlings .The temperatures keep falling each week ,at the first week it was 28.5-30.5C and at the very present, temps range from 22.5-26C. RH is about 50-60 .Ι noticed some tacoing on the leaves of the 4 plants, those tacoed leaves can be found on every height of the plant so im not sure if the problem is caused by the 400W leds im using(53cm from canopy).Also some of the lowest leaves are yellow .I cant tell if its a def or a surplus of ferts or something else.Ill add some photos so you can have a more clear picture of what am talking about. Thank you for instance guys!!!

 

[troutman]

Don't worry too much about lower leaves. It's the top growth that is important. Increasing humidity helps when leave Taco.

 

[HyDroid]

If you can dim the lights try cutting your power in half for a week and see if the new growth is darker green. Also try keeping the humidity and temps matched, RH above 60 if temp is around 25 C. You want your vapor pressure deficit to be good.

Looks like abiotic stress probably caused by too much light for the plant maturity. If the new leaves are dark after turning the light down, let them recover then gradually step the light up.

Once plants are light stressed (even a little fading or yellowing) it is hard for them to recover, so you often just need to grow some new, robust growth at low light levels and ease back into higher levels.

Since you are in flower though you will probably be fine this run and might just try starting at low levels next time and ramping it up slowly, maintaining dark green the whole time.