First Grow - 4 different strains

Flowering is taking some strain on the top fan leaves with most of the plants turning yellow. I have added some epson salts into one watering and cut back on the nutrients apart from the bloom. The White Widow is making a comeback, showing signs of growth and good bud development. The Purple Merkel is still taking over the space and reaching all of the place, I'm training her branches outward to ensure that most of each branch can get to the light. The Amnesia Haze and Critical Churchill are ahead in terms of harvest date, trichomes and brown pistils all over, no amber yet but Im sure this will change in the next week. Slowly Defoliating the plants every so often before regular watering to clear the bottom leaves and bigger fan leaves blocking bud sites.