What are your conditions? What are you growing in? Lights, medium, nutes, water pH, etc? Are these in veg or flower? How far along? It's hard to offer advice without more input from you. There is a troubleshooting form. Perhaps fill it out?

At first blush I'm going to guess a calcium deficiency and a bit of P needed too. Up your nutrient dose a few ml / gallon and add some unsulphured molasses @ 3/4 to 1 tsp / gallon. Good luck!
bigsby Reviewed by bigsby on . What are these spots? I have several leafs turning yellow and brown spotting. Ive seen a few pics, but some pics look the same. What are your opinions? 282380282381 Rating: 5