First Grow, CBD

Critical Mass has barely changed in height, though the buds are coming along very nicely... Looking at how the other two are though, and looking back it seems like it started flowering mid week 3... so that's almost 4 weeks so far. Some pistils are starting to go orange, not sure how much longer this plant may have left, since it hasn't behaved anything close to as advertised. Just checking the trichomes with a 30x lens to try and gauge it! Blue Shark and Peyote cookies have both shot up, i tied them down and they've reached 17 inches again already. Very bushy though, and there are many more bud sites exposed to the light now. Managed to cure the yellow top leaves with a dose of Epsom salts, a very dilute misting and a tea spoon per 9L added to their last feed. The outer leaves on the critical mass are going yellow, not patchy but sort of a gradual spread which seems to follow no obvious pattern... Any help on this would be appreciated. Smell is wonderful though, again, strong sweet and citrusy. Can't wait to try this! Day 5 01.04 update: Peyote cookies really stretching now, Blue Shark trying to keep up and they've dwarfed the Critical Mass now.