Week 6 of flowering some leaves getting a dark tint?

Hello and Happy Thanksgiving to the grow fam. I have a question fornyou guys if any one could help. I recently found that my plants runoff ppm was around 3000 so I did a sledgehammer flush and it went down about 1000 pmm still high at 2000 i know. However ive noticed some sugar leaves getting a purple hue i thought it was good then i read where it could be a P or K deficiency…anyone care to help i’d be very grateful. Pics below…
PH 6.4
TEMPS 69-79
HUMIDITY 55-63
FOXFARM HAPPY FROG SOIL
FF TRIO NUTES


Nice pheno expression Growmie, looking good :love_you_gesture:

They look good. Keep on growing on

Pipe cleaners. I love those things.

Looking good. Maybe just a teeny touch of excess Nitrogen. Nothing major.