Someof my plants got leaf like this. I think its lack of calcium, it always start when the plant is getting some height and many leafs. I have used some calcium nitrate and epsom salt (cant get cal-mag in any shop). I know that leafs that is curled cant be fixed, but small leafs that are curled, when they grow out, would the new part on that leaf be fine? I did try to use bone meal some, but bone meal dont work as fast as calcium nitrate so i have used 1tbsp in 1 gallon water to see if that helps. I did use maybe 1/4 gallon of this solution on 30+ plants togheter with normal water. on my last two watering, does that sound ok? To much or to little?