Possible Mag or potassium issues in Autopots with Jacks

Hello all,

Here the details: Week 6 from flip
autopots in coco/perlite 50/50
Jacks 3:2:1 at 1300 ppm including 280 ppm tap H2O, so around 1000 ppm or 2.0 EC of fed. I tried 4:2 with jacks last run and it did me well, but I tried that this round and got mag deficiency, so I thought, and just finished a week back at 3:2:1.
pH 5.9-6
850 - 1000 ppfd worth of LED
Fuvic at .5mls gallon

I’m on the fence on mag deficiency or potassium.

Thanks for looking!

Keep it green!

Overfeeding her...Drop the PPM.

^^^^^^ this

Thanks for the reply’s!

I’ll bring it down some. When I’ve run at 1000 +/- ppm I get light green leaves that look N def.