Stop transplanting them #1 YOUR going to kill them by doing that.

#2 if your having PH issues, pull out a cup of water from the tap, test the PH, let it sit 24 hours, then test it again. THAT is the variation in your PH, and that is EXACTLY WHY every sticky guide on basic soil growing tells you to let your water sit for 24 hours.

Sorry if this is coming off brash, I have a big heart for plants, it just about killed me when my first good seeds died from my 'over loving'