New pool owner and cya is high, not sure of Leslie’s advice

[Stickfigureman]

Hello,
New pool owner as of this summer. Trying to learn as much as I can. I went into Leslie’s recently and the test showed my cya was 106. It is almost 110 degrees daily here. He recommended draining pool to the second step and refilling. We had some shrinkage cracks on the plaster near the tanning ledge and I’m not fond of the idea of letting the plaster dry out on the ledge with this intense heat. Thoughts?

 

[PoolStored]

Welcome to TFP!!!

First, get a good test kit that is accurate and reliable. Link-->Test Kits Compared

Second, when you get your test kit, post a full set of results.

For your CYA test, follow bullet point 8 to do a diluted CYA test to get an accurate CYA level to determine how much water to replace.

CYA - Cyanuric Acid Test

Cyanuric acid (CYA) is the chemical name for the product commonly called “pool water stabilizer” … Read more…

www.troublefreepool.com

If you need to replace water, use section 3.5, "No Drain Water Exchange" to replace water without draining.

 

[Mdragger88]

Welcome to TFP
The first step is to get your own accurate test kit to base your next steps off of as pool store testing varies in accuracy by the day.
A tf100/pro or taylor k2006
Test Kits Compared
After you’ve got that & have reliable data if your cya is indeed that high you can do a no drain water exchange with the correct amount of water to prevent harming your plaster.
Section 3.5

Draining - Further Reading

www.troublefreepool.com

If your cya is 100 you would need to exchange 50% of your pool’s water to get it down to a reasonable cya level of 50ppm. Going down to the top step is really not going to do the trick & multiple drains & refills use substantially more water because it gets mixed each time.
Until your kit comes be sure you’re using enough liquid chlorine to maintain fc around 10ppm so nothing funky starts brewing & discontinue use of stabilized chlorine products
.... "Min FC" is 7.5% of the CYA level
.... "Target FC" is 11.5% of the CYA level
.... "Shock FC" is 40% of the CYA level

How to Chlorinate Your Pool

Before chlorinating your pool, you should know these simple tips. Learn the best way to add chlorine to your pool.

www.google.com

 

[Texas Splash]

Welcome to TFP! Once you receive your test kit, be sure to download the PoolMath APP and link your water tests to your TFP profile. Makes seeing all y our testing easy.

Enjoy the forum.

 

[Stickfigureman]

Ok wow thank you. Just ordered a tf pro kit. So do not use the 1lb of shock weekly or the two tablets? I thought it was either that or liquid.

Starting to think pool builder wasn’t the best source of info. I’m about to start a deep dive into this website to get better knowledge.

Again thank you!

 

[Stickfigureman]

Also I have a drop test kit left by the builder. Is that accurate enough until my new kit comes in?

 

[PoolStored]

So do not use the 1lb of shock weekly or the two tablets? I thought it was either that or liquid.

Granular shock adds Calcium to the pool. Tablets add CYA...hence your problem.

Add 5ppm of liquid chlorine per day until your kit arrives. Use PoolMath (<--This is a link) to figure out how much will add 5ppm to your pool.

What is the drop kit the builder left? Make/Model...

 

[Stickfigureman]

Granular shock adds Calcium to the pool. Tablets add CYA...hence your problem.

Add 5ppm of liquid chlorine per day until your kit arrives. Use PoolMath (<--This is a link) to figure out how much will add 5ppm to your pool.

What is the drop kit the builder left? Make/Model...

Pentair rainbow

 

[PoolStored]

The pH test in that kit is fine. If you test in the 7s, leave the pH alone.
The chlorine test in that kit is only going to tell you you have chlorine, not how much.

Just add the 5ppm per day to your pool until the test kit arrives.

 

[j190phil]

Hello,
New pool owner as of this summer. Trying to learn as much as I can. I went into Leslie’s recently and the test showed my cya was 106. It is almost 110 degrees daily here. He recommended draining pool to the second step and refilling. We had some shrinkage cracks on the plaster near the tanning ledge and I’m not fond of the idea of letting the plaster dry out on the ledge with this intense heat. Thoughts?

By your own test kit and don’t listen to them

 

[Stickfigureman]

The pH test in that kit is fine. If you test in the 7s, leave the pH alone.
The chlorine test in that kit is only going to tell you you have chlorine, not how much.

Just add the 5ppm per day to your pool until the test kit arrives.

My rough math seems to come out to 7.5 gallons per day. Does that seem right to you? It’s roughly a 15000 pool

 

[mknauss]

My rough math seems to come out to 7.5 gallons per day. Does that seem right to you? It’s roughly a 15000 pool

3 quarts (96oz) of 10% liquid chlorine will add 5 ppm FC to 15000 gallons of pool water.

 

[FlappyLipps]

7.5 gallons is not correct.

 

[PoolStored]

My rough math seems to come out to 7.5 gallons per day. Does that seem right to you? It’s roughly a 15000 pool

Did you use pool math? Link-->PoolMath

 

[Stickfigureman]

Did you use pool math? Link-->PoolMath

I did download the app, but having trouble figuring out how to find that part

 

[mknauss]

Effects of Adding. Upper left Hamburger menu.

 

[SJPoe]

Seems like you slewed a decimal - .75 of a gallon, not 7.5 gallons

 

[Stickfigureman]

I did download the app, but having trouble figuring out how to find that part

I don’t see any ppm areas just current and target

 

[Stickfigureman]

 

[SJPoe]

Click on the Menu button, top right
Select 'Effects of Adding'
Then you can enter the size of the pool, what you are adding and it'll tell you what it'll do.