Incomprehensible necrosis and leaf problem

I really don't undestand what is the problem, I think is the soil but i'm not sure at all.

I see a bit of thrips and I'll solve with spinosad waiting the ladybugs

I use biological soil + a bit of plagron royal mix and dolomitic lime and humus
I don't give nutrients just a bit of organic nutrients with low npk and benieficial bacteria and trichoderma



I use the same soil for the clone I just do and the clone have the same problem too, so I really think is soil but what in the soil and what i have to do? Trasplant all ?

Clone problems

Clone problems

Afther one or two day in soil the clone have that problem

Have you used this soil mix before? How long ago did you mix it up? Did you wet it at this time?

Any idea on proportions of each ingredient?

Organic soil means garden or field soil?

Humus means compost?

What exactly is "organic nutrients with low npk"? Have you used this product before?

Have you checked for Root Aphids? Good luck. -granger