It’s normal to get some yellowing leafs at the bottom of the plant but you’re a little early in flowering stage for that to be happening. That’s why my frist thoughts was check the PPM run off number . I like to feed when it gets below 1000 ppm. Overall your plants look good.
crank it up to 100% unless your following the DLI bit … if the yellowing leaves are in the bottom i think your in good shape the burnt tips don’t look excessive … id get more experienced opinions before adding anything to the mix u might have a different difficiciency … I aint no pro but ive ben around the block a couple times … i know enough to be dangerous
@kellydans added cal-mag 5 days ago and seemed the help with the yellowing, at least for a little while, looked in the tent yesterday and saw more yellowing so I gave it another dose of cal mag with its food, still yellowing really fast any clues to what I have going on?