I had a very serious cal/mag def and neither Lowes nor Wally World had any cal-mag! So I went to the vitamin part and bought some pills that had cal, mag, and iron and crushed em up and watered like that. I hope it works! The bottom lower leaves on my bigger plant was getting lil rust specs and black necrosis on em so I removed all of the affected! Which I'm sure I stressed the shit out of it! I just flushed the soil and foliage fed the mixture I made. I did put 5 pills in the soil bout 1/2 inch before I flushed, but any ways, I'm gonna go get my cam and post some pics now!!