You said to chime in more often so here I go! :-)

Inground 32,000 gal. vinyl

FC 5
CC 0
pH 7.2
Alk 110
CYA 20

First question: I have had a cloudy appearance to my pool lately so have been trying to shock more, but can't seem to get it to stay. Then I tested my CYA and in two weeks it had dropped from 50-20. What's up with that?

Second question. What is the difference between soda ash and baking soda? I use Mike's calcualator (BTW LOVE IT!!!! THANKS MIKE!!!!) and haven't had to raise my pH, just lower it with Muriatic Acid. He says to use Soda Ash. I have baking soda, but not soda ash....is it interchangeable? I don't really want to mess with my Alk because I think it is fine where it is, so if I understand this method correctly I shouldn't be using Borax unless I want to alter my Alk, right?

Any suggestions or guidance??? Thank you all for your help. You guys are great!

BB