Tomato tone is awesome, that leaf curl is something else. I use TT all the time in pots. Great stuff! I'm moving away from solubles myself. Well except for fish and seaweed products.

In 2 days Tomato Tone would not have changed, or done anything. It takes two weeks for it to work. So no way is it responsible for the leaf curl. Which is a sign of environmental stress. Too much, too little water, cold temps, etc.