looks very much like a magnesium blockage resulting from an excess in calcium. its very easy and safe to fix. add 1 tbsp of Epson Salt (magnesium sulfate) to one gallon of water. after the 2nd watering you will see a difference
as far as I know the only reason to add Epson Salt (magnesium Sulfate) is to provide mg when there is a lack of or a mineral block usually occurring from excess amounts of Calcium.
I had a Mg deficiency problem a couple of months backs and a couple waterings with 1 tblsp/gal fixed everything
I just harvested some SSH. I ran in to the same problems... My plants kept growing 45 days into flowering. I had to bend the plants over and tie them to stakes. It all worked out for the good... I had a successful harvest. Good lUck
Whats up everyone? i'm about four weeks into my first indoor grow and everyday i'm learning what i don't know. Lookin forward to discussing with all of you along the way.