yellow tops and leaves

heyy im at week 9 in coco, tops look great but 60% of buds are premature. Tried Scrog net and used to early, so it really didnt do its job. I have 9 plants in a 4×5... already flushed half 2 times... so my question, can I cut tops to make even canopy and get rid of yellow leafs. Then nute and...

Hello I have been having issues with my plants dropping.I recently switched over from veg to flower. While in veg everything was nice and perfect with all leaves reaching for the light and standing high. Now I am in week 2 of flower and all my plants have been dropping and all tops turning...

3 days ago I found the ph in my mix nutrients solution was low more than usual, a day before I did a foliar to my 12 plants with a formula to clean the white powder mildew in some leaves at the botton, I thought the low ph was because some drain in the buckets and finally to my reservoir...but...