Here's another plant that tied down but you can still see there's no rust looking marks
Ok man.
First, sorry for not responding yesterday. Second, I am nowhere near qualified to give advice on problems. I definitely have my fair share with my grow.
Im just bouncing ideas around..
The other one you posted the pic of has purple stems too. Dunno if that is strain related or not but it could be on its way to having "rust spots" as well.
My plants were doing the whole purple stem thing in veg. I ended up adding some 'bloom' nutrient to the rez and it helped. Haven't seen purple stems (cept on naturally dead leaves) since.
Maybe you should add more bloom food... But at the same time it sounds like you have enough...
Maybe there is an abundance of something else that is locking out the phosphorus. Zinc and Iron...just looked it up.
