have a ? if u can help give some addvise

So i am not having any problems with my plants except 6 out of 12 plants in my garden .. i am cureently in day 29 of flower in a 2000 wat room 3 days ago i noticed alot of the smaller leaves really began to curl downwards like a claw but the bigger fan leaves where amd still are perfect.. i have 2 diff strains in here 6-lifesaver 6- sour diesel and the sour was closetest to the where my fresh air from outside comes into my room ... does anybody know what could b doing this also i fed them at 1000ppm when i noticed it .... also i am using house and garden lineup just soil A+B and the bud xl was wondering if i can add budswell bat guano into my res with that product? thanks for reading this appraite whatever advise

Dont use anything else .watch whats going on first . You ultimately need to know what expect with those nutrients. Doing something this late can make things worse. On your problem i can only guess its winter so maybe
Cold air .. what media are you using??