Closet Grow #2A - Gorilla Glue Auto

This was the week where the best grow turned into the worst grow. I had been commenting on the low ph in the runoff and this is the week that the full effects came to light. I started getting yellowing lower leaves, which I diagnosed as a nitrogen deficiency, but it kept getting worse even after I fed her. After a little research I realized the low ph had her locked out. I flushed her with six gallons of 7ph water and was able to get the runoff above 6. The Vivosun ph pen I was using was a complete piece of crap so a purchased a good pen and the readings were worse that I thought. Seeing damaged leaves everywhere. She has decent looking buds and there are apparent trichomes, but not nearly what they should be.