Please Help! Thank you!

I am running Alien OG about 3 weeks in veg under 2 1000w HPS. Had a bad mite issue off the bat which is good now, then too much N which I flushed a week ago today. Since the flush they are looking much better in the new growth, but I have about 5-7 plants with these leaf issues. Any ideas? Did I not flush enough? Any suggestions would be greatly appreciated. Thank you all.

Maybe this is helpful. In the mean time I would just use water and not too much.

Could need cal mag.

I vote cal-mag too. Check your pH to make sure the plant could actually use the cal-mag, you want it no more than 6.5

thank you all. sounds pretty spot on to me!!!!!!