Basement Blueberry

Week 4 comes to a end and holy cow was it a eye opener. I decided since last weeks burn was an big issue I would purchase a meter. Local grow store had a few options but i went with Blue labs conductivity pen. And i picked up a 3 pack of my next auto run. But those will have to wait. I watered the plants till they had run off and used the 500ppm scale. I am not 100% i am doing this right, so any pointers of measuring run off and a ppm meter I will gladly take. So I measure the run off at 4000 ppm yes thousand. So I switched the meter to EC and it read 8.8, at this point I didnt know if what I was reading was correct. Non the less the planets looked better after a flush so I flushed again. I then measured run off at 2000 ppm. So i gave the plants a day to dry up a bit a flushed once more and got the plants down to 1000-1200ppm. Once I did that I watered light with recharge to re inoculate the micbros that I flushed out. The plants got 1 light watering at the end of the week after that. The grow stayed at the usual 1-1.1 VPD all week. Next week I will slowly transition toward flowering VPD. Mainly a slight drop in humity should set me up right for flower. The light ended the week at 16 inchs and 60% power. All the plants are looking happier much better color to the leaves and most of the shiny dark green leaves are gone. The burn for the most part is not even noticeable after defoliation. P 1+4 hit their stretch after the first flush so they have taken off a bit. I beleive the nitrogen toxicity was stunning growth across the board. But they are almost done the stretch. P2+3 on the other hand stretched sooner and they are farther ahead then P1+4 but shorter from the lack of stretch time they got. All in all so far I am happy, I am learning on the fly, and I am enjoying my first indoor grow. Again thank you for any and all support the growing community is one of a kind.