Soil ph 5 HELP

Is your medium soil or soilless. It looks a bit more like soilless to me in the one photos. The medium you used before in your auto bluebery grow is Plant magic plus, it consist of the following: Sphagnum Peat, Fytocell Foam and our unique Organic Growth Stimulant "don't know what that is" I would not classify that as soil. and more soilless. pretty much peat moss and a manufactured perlite alternative. Granted growing with dry amendments, worm castings and bat guano mixed in it like your other grow is closer to soil but still a hybrid. In the end I would mix in more worm castings or compost to make it more like a true soil blend. keep ph aorund 6.5-6.8 water with no runoff. As for your PH issue. you may need a more drastic flush option to get it back to normal fast. peat tends to drift down the overall PH, if this is the same medium as the blueberry grow. Could try watering with a ph up solution at 8.5 followed by a normal water then monitoring the PH and EC coming out. note that flushing with dry amendments will mess up its nutrient schedule. you will need to top dress after this is all done. Could also use a bit of liquid nutrients to bridge the gap till they are decomposed again for the plant to uptake. This is just what I would do, do what you feel it best with your grow. Best Of Luck!