Thanks Watermom.

So just did the CYA test with the Drops based 6-way. CYA is low. On the test the lowest number is 30. And I could still "see the black dot". So must be lower than 30. What's the best way to add stabilizer. Any recommendation on brand and where to buy and how much?

Also what's the best way to do this. CYA first and then bleech? Should the pump and filter be running non stop while I add these? If so for how long?

The pool is not new. I bought the house with this pool last year... but last year there was a leak in one of the pipes so it was a continues process of add water, fight with the pool to get the pump primed, try to get it clear all while loosing water.. .and then start the process all over again. In the end I just gave up and closed the pool while it was nice and green. Got the leak repaired in Apirl of this year.

Lastly, I think the chorine tabs may have copper based stabilizer. Not sure as they were left over from the previous owners. What the good brand of tabs and where to buy them? Is Walmart good for these as well?

Thanks again!