I fully understand the need to run errands Watermom ;-) No need to be sorry, and thank you for your help!

I am on day 5 following fill up so I am not sure I still qualify as a fresh fill and can use the Super Simple Startup Recipe. Dichlor sounds great and it looks like I could also use Leslie's Chlor Brite Granular (99% sodium dichloro-s-triazinetrione, right?) as I don't have a Sam's Club membership. Amazon would take too long to deliver. Leslie's is closed now so I think I will go ahead at dusk today and add 2 quarts of 8.25% bleach to remain in line with what the NPC instructions my installer provided suggest. I can get CYA tomorrow or start using dichlor tabs. Once I reach a sufficient CYA level, what do I do: start using bleach only?

As for CYA level, I used to have high readings by using trichlor tablets but I also had to empty the pool a couple of times to get things back on track. So I have no experience running lower levels (50 is low compared to what I was used to) and I don't know how fast FC disappears at that level. I was looking at 25ppm CYA only at first but was contemplating running at 30 after I found http://www.lincoln.ne.gov/city/healt...f/Cyanuric.pdf. This PDF states the CDC found CYA levels above 30ppm diminished "chlorine’s ability to inactivate the chlorine-resistant protozoan, cryptosporidium". Not sure the CDC still has this recommendation or not. This was a 2007 study...