700 CH with Flakes

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SuperMiguel

SuperMiguel

Well-known member
Nov 26, 2017
139
Florida
Hello, since i got my pool 3 years ago there has been a struggle with CH, for some reason it keeps raising to pretty high level, currently at 700.


So some background built new pool, pool vendor handle the chem for few weeks passed to me, i dealt with it for a bit and noticed my pH will increase rapidly, requiring sometimes more than a gallon per week, eventually i hired someone to look after the pool (guy been doing it for 40 years) after i while i noticed calcium flakes, fired the guy CH was over 1k, drain water for a while added soft water, maintained my self and eventually got it down to around 400. Hired another well known pool company that many of my neighbors used, after few months the flakes are back they tried to fight it with acid, that fixed it for a few weeks, but flakes are back CH is around 700. Note when pool gets flakes so do my salt cell. Also when i use the heater that seems to increase the flakes


In my opinion is lack of acid from their part but they claim is my pool finish releasing it, that acid is perfect. Just trying to get you all opinion.


Edit just got some results from a 2 year old test kit: and test strips
Note: pool cleaning company came today and added acid, not sure what else they added (few hours ago)
FC 7.0
pH 6.8
TA 40
CH 550
CYA 20
SALT 3600
Water Temp 93
 
Last edited:
Flakes are usually produced within the SWG cell during chlorine production. High levels of CH and TA contribute to the scaling. Can you post a full set of test results.
 
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SuperMiguel said:
Hello, since i got my pool 3 years ago there has been a struggle with CH, for some reason it keeps raising to pretty high level, currently at 700
Click to expand...
You get pretty much your pool volume in rain overflow annually in FL, with rain being 0 CH.

Most by you struggle to maintain CH.

Do you/they use non-stabilized shock (cal-hypo) ?
 
Rancho Cost-a-Lotta said:
Flakes are usually produced within the SWG cell during chlorine production. High levels of CH and TA contribute to the scaling. Can you post a full set of test results.
Click to expand...

Just got some results from a 2 year old test kit: and test strips
Note: pool cleaning company came today and added acid, not sure what else they added (few hours ago)
FC 7.0
pH 6.8
TA 40
CH 550
CYA 20
SALT 3600
Water Temp 93
 
You need to update your test kit. I don't believe the results listed are accurate. The results show very low ph and TA. There's nothing in that chemistry that would indicate scaling other than high CH which is likely not accurate either.
 
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If those numbers are accurate and consistently maintained, you should see no scaling in the cell. Your TA is a bit low. TFP recommends an acceptable minimum of 50 ppm. Your CYA is also lower than recommended for a SWG pool.

www.troublefreepool.com

What Are My Ideal Pool Levels?

Use our tool to find ideal chemical levels for any swimming pool. Check TFP recommended levels on pH, free chlorine, cyanuric acid, and more.
www.troublefreepool.com www.troublefreepool.com

As mentioned in my previous post, I would update the test kit and monitor levels on your own.
 
Rancho Cost-a-Lotta said:
If those numbers are accurate and consistently maintained, you should see no scaling in the cell. Your TA is a bit low. TFP recommends an acceptable minimum of 50 ppm. Your CYA is also lower than recommended for a SWG pool.

www.troublefreepool.com

What Are My Ideal Pool Levels?

Use our tool to find ideal chemical levels for any swimming pool. Check TFP recommended levels on pH, free chlorine, cyanuric acid, and more.
www.troublefreepool.com www.troublefreepool.com

As mentioned in my previous post, I would update the test kit and monitor levels on your own.
Click to expand...
Update: got a new KIT yesterday (TFtestkits) and tested water today:

FC 15
pH 8.2
TA 70
CH 625
CYA 60
SALT 3800
TEMP 90
CSI 0.63

Also i went to look at the Cell and there is visible calcium on it, also I just noticed that my Jandy TrueCrear has an error saying Check Cell, not sure if that is because the high FC, the High Salt, the calcium shorting it, or that it just went bad :(

So at this point i think i need to fire my pool guy and start doing it my self :( and will clean the Cell with acid and figure out if i need to make a warranty claim for it.
 

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Your CH is getting up into the higher ranges. Your pH is likely too high, but the test is not valid when FC levels are above 10 ppm. Let FC drop and retest pH. These factors are causing your CSI to be too high. For a SWG pool, CSI should be maintained between 0.0 and -0.30 to mitigate scale. Lowering your TA to 50-60 will also help. Did you add liquid chlorine or did your SWG get your FC up to 15 ppm.

I don't know much about your SWG system. Does it visually appear to be producing chlorine? Do you see bubbles in the cell or from the returns?

Jandy TruClear SWG - Further Reading

www.troublefreepool.com www.troublefreepool.com
 
Rancho Cost-a-Lotta said:
How old is your SWG cell?
Click to expand...

2 years


PoolStored said:
Super Miguel = I like your avatar, I'm glad you adopted my suggestion!

I would not clean the cell with Acid...Here is the guide to cleaning.

SWG How It Works - Further Reading

www.troublefreepool.com www.troublefreepool.com
Click to expand...

YES!! Thank you, let me check that link and clean it that way

Rancho Cost-a-Lotta said:
Your CH is getting up into the higher ranges. Your pH is likely too high, but the test is not valid when FC levels are above 10 ppm. Let FC drop and retest pH. These factors are causing your CSI to be too high. For a SWG pool, CSI should be maintained between 0.0 and -0.30 to mitigate scale. Lowering your TA to 50-60 will also help. Did you add liquid chlorine or did your SWG get your FC up to 15 ppm.

I don't know much about your SWG system. Does it visually appear to be producing chlorine? Do you see bubbles in the cell or from the returns?

Jandy TruClear SWG - Further Reading

www.troublefreepool.com www.troublefreepool.com
Click to expand...
Yeah i think i might have to drain some water to lower my CH :(
 
Great cant get my Salt cell to work, and they are on massive backorder, so i guess i need to add Chlorine manually until salt cell is fixed? The only good news on this is that my pH levels are stable for the first time in 2 years
 
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