ok all my helpers update from where I am now.
By aerating assume you mean running pump 100% with cover off ? Have been doing
Have shutoff the chlorinator so no tabs in the system
Yesterday morning added (1) 4lb 12 oz box Borax and (4) 1.42 6% Bleach
Checked at 4:00 and the ph was still very low which is what you all had concern. Added another 4lb 12 oz ------------ 2 hours later still low PH . Added another 4 lb 12oz last night
Check this morning as pump has been running all night using my kit

Chlorine .5
PH 6.8
Alkalinity 170
Hardness 210

Using test strips I had the PH actually might just be approaching 6.8

Does all this make sense ? Assumes as you all had concern my PH was extremely low and after adding almost 15 lbs of Borax still is low . Assume getting PH is still the priority .Out of Borax so will wait for feedback then make a run.Have 3 Bleach but will also hold waiting advise.Water is still crystal clear and with warm PA weather my pool is 82 .Never this early this nice in Western pa

Waiting for next steps