First RDWC - West Coast OG/Super Lemon

•Both showing new growth nearly everyday. •Defoliated bottom stunted leaves from both on 2/22 to focus more energy into producing new growth. •Lst WC OG 2/23 to even out canopy. •Res change 2/24 increased PPM to ~500. •S.Lemon looks like it’s developing a deficiency of some kind…zinc/magnesium maybe? If anybody has some advice it’s most welcomed. •Increased LED intensity to 100% •Rotated both to give them more light to even out the canopies. •Having trouble with both of them again. Lemon has some sort of deficiency/maybe nute burn. •Flushed/cleaned everything filled up res with 500PPM solution different ratio of nutes. •Doesn’t look like anything’s wrong with the roots but can’t figure out what’s wrong. PH stays between 5.6-6.4. Suggestions?