I planted a blueberry fem from seedsman and a runtz bagseed on April 5th at the age they are now compared to another plant that I have going they seem to have stunted growth. I started to notice yellowing fan leaves on the blueberry plant so today I tested the runoff and if I’ve done it properly I had a ph of 6.8 and Ppm at 883. I am using fox farm soil as well as the trio. I started feeding on 5/18 with 5ml grow big and 28ml big bloom which is about half strength. Am I just seeing nitrogen deficiency due to a late feeding ? And as far as the growth could it just be the strains ? It just seems odd that 1 plant is doing well better than the other 2.