Sorry..I typoed. The browning started 3 days ago...lol....my plants are 2 months old today.

I'm in 5 gallon pots, 60% MG organic soil...30% paralit...10% manure. With three inches of gravel at the bottom.

Using fox farm tiger bloom at 1/2 strength which I know I jumped the gun with because I thought I was seeing flowering but it was a false alram. I want to revert back to veg nute "Fox farm big grow" but now with this dog shit brown going on in the lower leaves I dont know what to do!