I just tested the runoff on this plant pictured here. PH was 6.27 and ppm was 550. It has only had organic Dr. earth and worm castings and it is in a blended soil of Pete and Coco and worm castings and perlite I just tested the runoff on this plant pictured here. PH was 6.27 and ppm was 550. It has only had organic Dr. earth and worm castings and it is in a blended soil of Pete and Coco and worm castings and perlite It is a blueberry I think yes and it was planted on January 18. This photo is immediately after I flushed it with a gallon and a half of TErp tea