Can I use sand from Lowes

[duraleigh]

Hi, Wendy,

1. Yes you need more Cl...tell you how to figure it in a minute.

2. Disregard the BR reading....it's irrelevant.

3. You need muriatic acid to get your pH down.....tell you how to figure it in a minute

4. Hardness - disregard that one, too.

5. CYA....there's a little snag...30 or below could mean zero. Please try to get a better reading.

You'll need muriatic acid to lower your pH...sooner rather than later. Then go stock up on some more bleach.

Next, download mwsmith2's calculator from any of his posts and calculate enough muriatic acid to lower your pH down to about 7.2 - 7.6.

This evening, just before dusk, put in enough bleach to raise you Cl from .5 all the way up to about 15ppm. put it in the skimmer with the pump running.

take more readings tomorrow and post them back up. It's quite possible your pool will look much better overnite but you still need to get that CYA test resolved and make sure you get your pH below 8, at least
Download mwsmith2's calculator from any of his posts.

There's another small issue with your test but let's address that after you add the muriatic acid and the Chlorine. Post numbers after you add those two.

[wendylolex]

Where is mwsmith's post? I just added a quart of muratic acid. The bottle tells me I should add 1 quart per 20,000 gal. every 12 hours. I don't know how many gal of water a 27' round pool holds. I guess I could call the pool place and they could tell me, unless you know off hand.

As far as my CYA, my tester only goes to 30 and I could still see the black dot at the bottom clearly, so it would have to be a lot lower than that. I could take some of my water to the pool place and they could test for me if it's that important.

Thanks for helping me out. Wendy

[matt4x4]

you pool is 17,123 gal at 4 feet full
Easy to figure out (this is using inches)- 3.14xRxRxH/231
3.14x162x162x48/231=17,123