Robertsanswered grow question 2 years ago Okay so what is really going on is you got 1 of 2 things going on. 1st ph is in a lock out or riding the boarder. 2nd you have a advanced potassium deficiency is the spots. You are in bulking in flowering. The demand for potassium is extremely high at this stage. Regardless it is showing potassium deficiency not calcium or magnesium deficiency. Feel free to look up advanced potassium deficiency in cannabis and you will see very similar signs.