These girls are moslty Sativa Nirvana's Papaya, about 1 week into flowering, outside getting 7 hrs of direct sun. I have them in a Half cut of 55gal drum filled with top soil and peat moss. The issue was a high Ph of 8, So i mixed ounce of vinegar to a gallon of water and poured it all, dropped the ph to 6.8 and for 3 days the girls was doing fine, then today one of the girls (on the Right) started to turn brown the fans leaves. I checked later on the day and istead of a mushy brown it is turn crisp and also the ph has risen to 7. It has only affeted the one plant and not the others and just the fan leaves the stem is still firm and not browning.. the soil is still really moist. Any ideas of why the leaves are doing this and how to fix it. Any input is helpful