a couple calcium questions

[CarlD]

Uh-oh---your FC is 10.8 and your CC is 11???

Are you sure? is it CC or TC that's 11 (if it's TC, then CC= 0.2--TC = FC + CC)

If that's right and CC is 11 (which is hard to imagine) then you are fighting an infesting and the muriatic acid won't do any good.

[gordyjamz]

Sorry about the typo. Its total chlorine that is 11.0, not combined chlorine. My mistake. My chlorine levels have dropped a little with the storms lately, and with the predictions of 1 to 2 more inches of rain, I very well may have to shock again. I will be using bleach instead of cal hypo this time though.

[CarlD]

Have you tried shocking your pool up to 20ppm and keeping it there for a few days? If it got HAZIER after the rain, it's sounding like algae.

[gordyjamz]

I shocked it today. 20ppm is what I usually raise it to during shock, but then I usually let the level drop back to normal range. I've never tried to keep it at that level for an extended period of time. I'll try it this time.

[gordyjamz]

Here's an update for my situation. I shocked at 20 ppm, as recommended, for 3 days. The pool cleared a bit more. The aeration method seems to have worked a bit too. The ph did rise but alk rose very little, if at all. I kept adjusting with muriatic acid, as recommended. I put in a little clarifier, once my levels were back to normal, and presto, after a day, the water was crystal. Has been since. Here are my present numbers from this afternoon:

PH 7.2
TA 130
CH 300
FC 12
TC 12
CYA 45

Thanks again for the replies and help!

[CarlD]

Good Job! Now you can bring your FC down to the 3 to 6 level and it should hold.

And you can enjoy your pool!