Well sorry but here goes. Leaves curl up and die along the tips and edges with Magnesium deficiency. Use Cal-Mag product. Epsom salts work 1 tbsp per gallon, but has lots of salt that is bad. Deficiency symptoms start on lower leaves which turn yellow, leaving only the veins green. Then leaves curl up and die. Foliar feed of Cal-Mag recommended to improve new growth. This is fairly common deficiency.

Maybe this will help you both. I hope so. Hows your curl down leaves? I meant drain holes in the soil plants. Maybe someone more experienced will come along and help. I recommend buying a grow bible for you both.