No Solar Cover, returns do not cause any bubbling, just some ripples. I will point them further down. Pool was re-plastered in 1995. Before draining CH was 390, TA was 120, CYA was 120, pH 8.0.

Over the last week here is what I have done and the results:
TA was at 70 so I added 2 lbs of Bicarbonate every day until it reached 90. I add it when the pump first starts up and I add it by mixing it with 5 Gal Water, stirring extensively than using a home-made siphon to spread the solution all over the pool surface. When the 5 Gal bucket gets low I add more water and stir again then spray again, this is repeated 3 or 4 times until there is no more Bicarb that has not dissolved. After 4 days TA was 90-100 pH was 7.8-8.0. I then added 8 oz HCl a day and after 3 days the pH was 7.6 but TA was back to 70. I am being told by the local stores that at some point this should stabilize and not need Acid or Baking Soda added every day....