Pool Chemistry HELP!!!

[mknauss]

Neither of those items will cause high CC. One is Cal Hypo and the other is baking soda.

Something got added.
I would ignore the CC right now and keep you FC in target range for your CYA. See if things balance out.

 

[flbranham]

Neither of those items will cause high CC. One is Cal Hypo and the other is baking soda.

Something got added.
I would ignore the CC right now and keep you FC in target range for your CYA. See if things balance out.

Ok. Thank you so much for all the help!

 

[flbranham]

Neither of those items will cause high CC. One is Cal Hypo and the other is baking soda.

Something got added.
I would ignore the CC right now and keep you FC in target range for your CYA. See if things balance out.

One more question.
PH 6.8
TA 60
Should I go ahead and use pool math to bring the ph up using Borax?

 

[mknauss]

Yes. Target 7.2

 

[flbranham]

My pool looks great. My CC are still high. Why would the water sting if you have a cut and sting your eyes?

 

[mknauss]

pH or high CC can cause that.
What is your CC now?

 

[flbranham]

7

 

[mknauss]

With how your water looks that makes no sense.
There is something interfering with your testing.

 

[flbranham]

With how your water looks that makes no sense.
There is something interfering with your testing.

I have not added anything to it.
Ph 7.2

 

[mknauss]

Are you still using the Metal Out? Is it Sulfamic Acid?

 

[flbranham]

Are you still using the Metal Out? Is it Sulfamic Acid?

I never used it. The only thing I have put in it since last time we talked is Borax.

 

[mknauss]

OK == time to call @JoyfulNoise

Matt -- this member has very high CC. No chemical additions have been noted to cause it. Clear water. Holds chlorine.

Ideas?? Thanks

 

[JoyfulNoise]

What kind of iron filtration system are you using on your well water?

 

[flbranham]

What kind of iron filtration system are you using on your well water?

A particle filter from Lowe's.

 

[JoyfulNoise]

A particle filter from Lowe's.

So not a chemical filter like a green sand filter or Birm filter?

What does your water smell like?

 

[flbranham]

So not a chemical filter like a green sand filter or Birm filter?

What does your water smell like?

Does not have a smell.

 

[flbranham]

Does not have a smell.

Does not have sulfur. You can drink it and it does not taste bad.

 

[Mr Bruce]

Do you use a dedicated vial for FC/CC testing?

 

[flbranham]

Do you use a dedicated vial for FC/CC testing?

Yes

 

[JoyfulNoise]

So there’s definitely some kind of interference going on here. Water with a CC level above 2ppm would have a very distinct, harsh “chlorinated swimming pool” odor and anything above 5ppm would smell so bad that no one would want to swim in it or spend any length of time around the pool.

All I can think of is your well water has some kind of organic compound in it that is registering on the test. This happens a lot in hot tubs where organic CCs build up and are persistent - meaning that further elevation in FC, even beyond shock level, will not destroy them. One sees this in a “breakpoint chlorination” graph as a persistent level of CC that never goes down. Of course, in a hot tub, you simply dump the water when it has become fouled. A pool is a much harder problem.

I’ll have to think about this a bit more....