Water Test Results

[kcmonarch55]

Hi everyone....here are my latest test results. I have a 19,000 to 20,000 gallon Grecian (just moved in) my clarity is good. What do I Neff to have done?

PH - 7.5
FC - 0.3
TA - 61
Total Chlorine - 2.4
CH - 118
CYA - 150

These are pool store test results. I just got my tf100 test kit so I'll test with that after any recommendations. The guy at pool store said 22.5 pounds of Balance Pak 100 to raise TA, then 3.5 pounds of low and slow to adjust pH when it raises the TA, then 9 bags of shock to adjust whatever is happening to the free chlorine level.
Thanks everyone!!

 

[mknauss]

Nothing until you are able to test with your own test kit.

 

[duraleigh]

+1 what Marty said. No pool store results, please, when you own the best kit already.

 

[kabutotx]

What kind of pool do you have? If plaster, your CH is low so you could use cal-hypo to raise FC and CH. If vinyl, I would use liquid chlorine to raise FC since CYA is high and you don't need anymore CH.
TA is fine if pH isn't rising or lowering.
Get a TF-100 or Taylor K2006c test kit.

 

[kcmonarch55]

What kind of pool do you have? If plaster, your CH is low so you could use cal-hypo to raise FC and CH. If vinyl, I would use liquid chlorine to raise FC since CYA is high and you don't need anymore CH.
TA is fine if pH isn't rising or lowering.
Get a TF-100 or Taylor K2006c test kit.

I have a vinyl pool. Should I use liquid bleach our shock it?

 

[mknauss]

I have a vinyl pool. Should I use liquid bleach our shock it?

Shock is a part of a process. Liquid chlorine is sodium hypochlorite. What do you want to achieve?

Post a complete set of test results from your TF100 kit and we can provide guidance.

 

[kcmonarch55]

Shock is a part of a process. Liquid chlorine is sodium hypochlorite. What do you want to achieve?

Post a complete set of test results from your TF100 kit and we can provide guidance.

Just trying to get the chlorine straight since my total chlorine and my free chlorine are out of whack

 

[mknauss]

Just trying to get the chlorine straight since my total chlorine and my free chlorine are out of whack

How do you know? The tests you posted are not viable to make any decisions.

 

[MrBfromNC]

Have you tried using the TF100 yet? The tests are not very difficult to learn. Check out the videos if you are uncertain how to perform them.

https://www.youtube.com/user/TF100TestKit/videos?disable_polymer=1

 

[kcmonarch55]

Nothing until you are able to test with your own test kit.

Okay here we go with the tf100 results. Any feedback is appreciated

7/12
Free chlorine - 3.5
Combined chloramines - 0.5
Total chlorine - 4
Calcium hardness - 100-125
Total alkalinity - 110
Cya - 100
PH - 7.5

 

[mknauss]

Great. With a CYA of 100 you should do Step 8 in Pool School - CYA

Once you have your final CYA, you can determine how you are planning to reduce it to 50 ppm via drain and refill.

A signature providing details of your pool and equipment will let us provide more complete guidance. See Pool School - Read This BEFORE You Post

 

[kcmonarch55]

Great. With a CYA of 100 you should do Step 8 in Pool School - CYA

Once you have your final CYA, you can determine how you are planning to reduce it to 50 ppm via drain and refill.

A signature providing details of your pool and equipment will let us provide more complete guidance. See Pool School - Read This BEFORE You Post

So do nothing to the pool i.e.shock or bleach until I get CYA down?

 

[JoeSelf]

With a CYA of 100 before dilution test. You would have to keep a SLAM level of 39 according to the [FC/CYA]https://www.troublefreepool.com/content/128-chlorine-cya-chart-slam-shock [/FC/CYA]

You need to lower and refill after you get a better number for CYA. I was there too. Dumped 50%, refilled and never went back to pool store for advice.

 

[kcmonarch55]

With a CYA of 100 before dilution test. You would have to keep a SLAM level of 39 according to the [FC/CYA]https://www.troublefreepool.com/content/128-chlorine-cya-chart-slam-shock [/FC/CYA]

You need to lower and refill after you get a better number for CYA. I was there too. Dumped 50%, refilled and never went back to pool store for advice.

Dam! Alright thanks man

 

[MrBfromNC]

KC, if I read this thread correctly, I think Marty's advice was to get a more accurate CYA test number and report that result back here. Not that you won't need to do anything eventually, but the CYA is pretty important.

 

[kcmonarch55]

KC, if I read this thread correctly, I think Marty's advice was to get a more accurate CYA test number and report that result back here. Not that you won't need to do anything eventually, but the CYA is pretty important.

Thanks man I appreciate it. I'll do that.
The pool store guy (when I got the results those morning) was concerned about the chlorine potentially fighting something because the free chlorine was low

 

[mknauss]

Your test showed you have low FC based on your CYA. Once we know the real CYA level you will understand what FC is needed at that CYA level and why you need to drain to lower your CYA.

 

[kcmonarch55]

Your test showed you have low FC based on your CYA. Once we know the real CYA level you will understand what FC is needed at that CYA level and why you need to drain to lower your CYA.

Okay so tested the CYA with step 8 method and came to about the same number 100-110 (after multiplying 55x2)

 

[mknauss]

Great. So you need to drain 50% of your pool volume and replace with fresh water.

Maintaining a pool with CYA of 100 is possible, but your minimum FC is 8 ppm and your target is 11-13 ppm.

You should raise your FC to at least 13 ppm now until you are able to drain.

Your pH test is invalid when FC is above 10 ppm.

- - - Updated - - -

Is your pool vinyl liner, gunite, or fiberglass?

Draining has risk, so with more information we can provide more detailed guidance.

Please add a signature.

 

[kcmonarch55]

Great. So you need to drain 50% of your pool volume and replace with fresh water.

Maintaining a pool with CYA of 100 is possible, but your minimum FC is 8 ppm and your target is 11-13 ppm.

You should raise your FC to at least 13 ppm now until you are able to drain.

Your pH test is invalid when FC is above 10 ppm.

- - - Updated - - -

Is your pool vinyl liner, gunite, or fiberglass?

Draining has risk, so with more information we can provide more detailed guidance.

Please add a signature.

Okay thank you! How can I go about raising my FC to 13?