hellpppp!!

Hello guys I'm growing in Deepwater culture this is my 2nd grow and I can figure this problem out I'm thinking it's possible broad mites but I need opinions I'm using gh flora series 2 part my plants that are in flower are really yellowing up at week 4 and my plants in veg goy strange holes n a weird color my pH is between 5.8 and 6.3 anything helps guys
 

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