Space Queen- Canada legal grow

Bad week for all my plants, alot of yellow forming. i have been finding the tiny fan leaves fallen off into the pot. I'm unsure whats going on at this point. either its because i haven't been using calmag, or switched my lights to only bloom. Most people thought this was due to over watering. I only water 1 maybe 2 times a week. i'm assuming just both strains are not for beginners. buds fattened up but that's about it. Nothing is getting easier, i'm feeling defeated but hey i guess it comes along with the job.