brown spots on my diesel

was wondering if I can foliar spray with calmag for a mag def or cal def im in veg and all i have is the calmag bloom formula can I use that in veg my ph is at 6.3 or should i wait until pot drys out and water it in let me know thks

Foliar feeding is good fix for a problem and stopping it from getting worse, but is not the long term solution. I would spray and then water with cal/mag as soon as you can.

rust spots is the proper term i guess how do i fix this

ok thanks today is water day so ill water with cal mag bloom im in veg but all i have is calmag bloom