plz help brown spots on leaves getting worse

[howsyourroof]

38 days veg.foliar feeding with ff gro big to mak up lack of mag

[Four2zeroKmK]

How are you measuring the PH of your water and how are you keeping it at 6.6?

[smokybear]

38 days veg.foliar feeding with ff gro big to mak up lack of mag

u need to flush and start over with mild solution,like 1/3rd then u should have no worry after a couple of days,if not the old at lease the new growth