Cool, it's quite an accomplishment to have a healthy blueberry crop. It's notoriously hard to keep happy!

To the OP, this is good advice, especially when you are still early in the learning process:
"My experience is that you are better off under feeding than over feeding. They may grow slower but they will not get burned. Everything new that is introduced needs to be slowly too. When under new lights, when adding fert as well as LST, etc. Too many people rush the process and stress the poor ladies out. Slow and steady winns the race." Very true okwtfo.