Power Plant feminized

They did a fair amount of growing this week. 7/8/20- first shot of bloom juice in prep for flower 7/11/20- heavy defoliation and flip Edit: 1 plant started showing signs of deficiencies, followed by the other, PH WAY too high, i never check run-off and assumed i should.. i was getting 6.5 and 7's but my junk meters tend to read low so i flushed them both with water (very light nutes) with a PH of 4-4.5 and been watering them every other day at that PH..not sure what else to do at this point