transplanting to bigger pots

i have plants about 4 weeks old in cut off plastic bottles the clear plastic was covered up i have taken the cover off and looked at the bottles and the roots are showing inside the bottle i just watered them today last time was 4 days ago the leaves were wilting today so i watered them now the leaves are curling under like a rams horn looks can i transplant them in there new planters pots gallon sized i am also using mg control realise can i put them in the bigger pots and they will be ok

a picture is worth a thousand words.

ahh i believe what u got is "the claw".

here's something about it from another good site online.


"If you give your plants ammonium based nutrients they may show NH4+ toxicity, which will show a smaller plant growth and lesions that occur on stems and roots, leaf margins that will roll downward. Also the big fan leaves will have “the claw” look. The tips will point down but the leaves will stay up as if when you bend your fingers downwards."