please help bax , what deficiency and pest is this ?

HI rollitup , the flowering plant maybe 3 weeks in , fed 3 , 18 , 35 npk with trace elements (edta ) , cal mag , seaweed , silicon , humic and fulvic acid and amino acids and flower booster 30 20 (pk) ,

medium is soil and slurry ph test shows ph 6.9

this problem is recently happened this yellowing near top buds , you can see in pics ,
and look at that white dots spider mites ? what to do ? Only thing I know to do is using avid ? safe ?


please help ,

they are pics

the burned tips isn't due to nute burn it's potassium deficiency and it stopped a bit after using 3 18 35 npk ,

You have given too much stuff.