Oh Canada dispensary bag seed

So I did my tie-downs this morning. Also trimmed quite a bit a few days ago. Some of the new leaves were showing some tip curling so I thought a tox, but then when I backed off the nutrients I started to notice some yellowing. I think it was possibly too much N or P followed by too little Mg. So still working out the kinks there. Any advice/tips are welcome! Thinking about switching to flower soon. Probably within a couple weeks. A Happy Weed-mas to All 😽