adjust cya before or after shocking

[Kateyru]

No apologies needed, you didn't sound dismissive...I just know I'll need a little more handholding.
I must have been testing while you were posting. Results are FC = 4.5 (sunny day), pH = 7.3, TA = 80 (bright pink color, I wouldn't call it red)
Dissolve on top of sand??? not sure what that means...dose the dichlor in the skimmer basket at the pump versus in skimmer at the pool? Wherever I put it, does all go in at one time?
I run the timer about 8 hours a day. It would be somewhat difficult to divide the run time for the next couple of days (due to work schedule).
re: sock for granular cya...a real sock or is there a pool sock?

[BigDave]

When the TA test changes (in one or two drops) from green to Red / intense pink you're there. 80 sounds pretty good.
I meant puttng it in the pool skimmer - it then goes through the pipe, through the pump then onto the sand. As far "as all at once" - slowly into the skimmer, you don't want a big chunk to clog your pipes or pump.
if you've only one run period a day, best to add the dichlor at the beginning of the pump run. I wouldn't pour it in the skimmer if the pump is not running and neither should you.
I've used a nylon stocking doubled over - some people use tube socks.
So... FC 4.5 on a sunny day - loss of 2.5 today. Another 2.5 puts you below your minimum. I'd dose with a pound of dichlor. You'll need to add Borax after that to lift pH.

[Kateyru]

Ok, I'll put in a lb. of dichlor 1st thing tomorrow morning then check FC and pH later in the day.
thanks.

[Kateyru]

I have a question. I'm at the point where I am adding CYA (granular) to pool water. It's in a stocking and hanging in front of a return as of late yesterday afternoon. Do I need to run the filter/pump 24/7 while CYA dissolves or just run the usual 8 hours? Btw, water is looking good, and FC = 5 and pH = 7.6 per most recent test.
Thanks.

[BigDave]

Hey, happy to hear from you, I'd been wondering how the algea battle finished up. Glad to hear it's looking good.
Run your pump on it's regular schedule. Give the sock a squeeze now and again to help it along.

[Kateyru]

Good, glad I can cut back on pump time, and I'll squeeze prn. Many thanks again for all the help!!

[Kateyru]

Well, I'm back with another question...I just tested (5:45 pm) and got FC = 11.5 and pH = 7.6 (holding steady). My FC is up from 5 in 48 hours. I added salt and may have gotten a little heavy-handed. Hayward recs 2700-3400 and I'm at 3900. I'd set SWG at 45%. Is the FC up because of too much salt or is % too high? Other thoughts?
Thanks.