Hello, all! This is my second pool following these methods and 2nd year with this particular pool. The first year, we fought a battle keeping it balanced as the TA and CH were consistently high. I got that all worked out at about this time last year and we had a perfect pool all summer. Over the 'winter' here in Florida, I maintained pH and FC, and ran full tests fairly regularly. We also had to invest in a new pump, so now that I've got a good one, I want to take full advantage.
Over the last couple of months, I've had quite a bit of emergency travel, so things slipped a bit during a rainy period that caused us to need to drain the pool down a bit several times. After all of this rain, with my newest test results, CYA and CH have taken a nosedive. I've got family from up north coming to visit in a couple of weeks so I'm working to get the pool back to the pristine state I had it all of last season. There's some staining on the bottom of the pool, and some black spots that look like they could be black algae (ugh) so I thought I'd do a SLAM and then work on the others. I've gotten the pH back down to where it should be, and the FC is holding, but I want to do some work on the CYA and CH. What I need to know from the pros here is... how would you attack this for the quickest results?
FC - 5
pH - 7.5
TA - 100
CH - 168 (14 drops * 12)
CYA - barely 20
I have a bag of stabilizer ready to go, so I was going to hang that from the ladder today. We also have one bag of cal-hypo (56%) and I stocked up on bleach yesterday. I need to bring the CH up as well, so should I get more cal-hypo and use it rather than bleach for a short time? The pool store that I visit (rarely) currently has it buy one get one free, so it's actually cheaper than Clorox at the moment.