Blueberry pancake + Collie man kush. HSC

This was the last week of veg. I will switch to bloom nutrients from advanced nutrients. So far so good. I lowered the ec by 0.3 a few days, because I got a slight tip burn. In my previous grow I had to deal with nutrient lockout, I am trying to avoid that this time. I measure the values of the water tank 2 times a day, In particular the ph values keep rising daily. I will defoliate when they are done stretching , around week 2 or 3