Thanks for all your help everyone! I hope to get through this at some point! I just wish I didn't have to leave town next week.

I would much prefer to just deal with it via chlorine. I know I need more CYA, but am doing it slowly as I am not sure at this point how much I have, and how much more I need to add to get into the 40ppm range. So, I keep adding by the half pound. I "believe" I have added 2 pounds so far.

So, say I stay the chlorine route for now, until I get back from vacation, and try to up my CYA more, and lower my PH, and keep shocking close to 15ppm as possible? Does that sound legit?

If so, what do I do first, add more CYA, any guess how much, being it has clouded my test water, so I know there is some there, just not up to the 30 mark yet.

Or, add muriatic acid to drop PH first? Can I do these two things by doing one today, and the other tomorrow?

I am using my PoolBuster Max CG vacuum, and not using my pool vacuum at all, so I don't have to worry about backwashing out my stabilizer, since there will be no need to backwash.

I haven't used the muriatic acid in at least a season or two. Can y'all tell me how much I need to add to drop from 7.9 to the preferred range in 11,200 gal vinyl pool? I think I just pour it from the measuring cup into the deep end?

Then, if I recall, that can/will alter Alkalinity?? How soon can I address that issue?

If y'all can give me the best order I should add these chemicals, and how long I need to wait in between, that would be great!

Thanks for your patience. And Dave, you are right! I have gotten slack on my numbers since last season, and hence, PROBLEMS.....

John