ok so my plants leaves are curling up. humidty is at 50. temp is 74.

yeah so my plants leaves are curling up. my temps are good humidity is good so im thinking k deficient. ph is good also. so i gave them some kelp and Epson and some molasses. was i right in doing that. no pics i dont post pics. no other signs no color prob.

Sometimes I get curled leaves ( up and down ) but usually I wait 1-2 days before I worry too much. I just make sure to keep the right tems and airflow.
For me it's enough to see them green and happy.