ph runoff

Hi everyone , I'm a newbie so so I'm hoping I can get some guidance. I'm growing one gorilla glue and two blueberry auto flower plants . They are in 2 1/2 gallon air pots and growing in fox farm ocean forest potting soil. I'm also feeding the plants fox farm big bloom , tiger bloom and microbe...

*indoor w/ soil. 3 gallon final pot* Just out of curiosity I tested my runoff and it's at 6.14. Is that too acidic or am I good? I watered with hard well water phd to 6.4. Usually it's watered at 7.4 but I started to ph it. My last feeding was with fox farm trio at 1/2 strength 2 days ago. And I...

I don't really understand why my nute PH does this, is this a problem? I also have rust spots on my leaves, are these two part of the same problem? Thank you for your help.