Hey guys I was having some problems with my leaves I am In week 5 of flower and am using a coco and perlite mix. Nutrients are Biobizz and Recharge. The leaves are curling down and have spotting. Some leaves are turning yellow from they outside of the lead in and it didn’t start at the bottom of the plant it is in random spots. I was possibly thinking it was a salt build up. But I want to see what everyone thinks so I can do the best thing to treat it.