New guy needs help

Txjole

Bronze Supporter
Aug 22, 2018
287
Wylie/TX
Ok question, should I go ahead and add Calium Hardener or wait. I just hooked up my auto fill and we have notorious hard water. 90D0B44B-A1D8-4DF7-BC15-9ED3FE2AADE7.png
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
22,426
Laughlin, NV
OK ----------
Your CSI is not in the aggressive region because of your TA and pH. Maintain a CSI of greater than -0.6 by not lowering your pH any more than to 7.8 when, and if, it reaches 8.

As the water warms, your CSI will naturally become more positive. So as your TA falls by adding acid to maintain your pH at 7.8, your CSI will be OK. Over summer, your evaporation will mean you are adding high CH fill water and thus, your CH in the pool water will rise. I suspect, by July, your CH will easily be 300 ppm.
 
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Txjole

Bronze Supporter
Aug 22, 2018
287
Wylie/TX
Thanks guys. Water chemistry is a big deal for me. I have a special 6 year old that skin doesn’t fair so well in the HOA or water park chlorine pools, but he seems to do well in the grandparents SWG pool. I got to get, and keep this water right, I can’t handle him watching from the sidelines.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
22,426
Laughlin, NV
Most likely pH will be the chemistry value most important for skin issues. So if you see any reaction, be sure to check that. Your child may need the pH were it is or lower, every person is different.
 

tcason

Bronze Supporter
Apr 26, 2018
36
Queenstown MD
might want to consider adding Borates in a couple months when you are comfortable with all numbers............... I did last year in my new pool and it feels great.

An expert may comment on skin condition and borates.
 

Txjole

Bronze Supporter
Aug 22, 2018
287
Wylie/TX
As we creep into warmer weather and I learn my chemistry. How’s this look? My CYA readings are changing ( up and down) so I hoping that is operator error. F584CE88-247E-4D15-93C5-2B9C7ECF4A37.png
 

Jbrillo

Gold Supporter
Jun 11, 2018
327
League City, Texas
Your last CYA was in March and if you’ve gotten as much rain as we have down here that could’ve made it drift down some. I had some trouble with CYA testing in the beginning but found this pic that might help:
97117
 

Txjole

Bronze Supporter
Aug 22, 2018
287
Wylie/TX
Quick question, I have been working on dialing in my chemistry. Starting with my low CYA numbers. Added 2 lbs of dry last weekend. I just read that CYA reading can be inaccurate in water temps below 70. Is this true?

(my Poolmath logs are linked to my profile, that's a cool little feature I just learned!)
 

Txjole

Bronze Supporter
Aug 22, 2018
287
Wylie/TX
Where is my calcium going? We had 2” of rain this week is all I can think. I also ran this test this morning before my pump ran? It could easily be 175-200. 680E955B-AE93-44D4-BE62-3ED9A1C7B868.png
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
22,426
Laughlin, NV
Looking at your PoolMath logs (we can click on your Member Name and see your Logs) you are down 50 ppm CH. Are you using the 10 ml sample for testing? If so, there is error and thus you could be down just a touch on calcium because of any overflow from rain, but not much.
What is your fill water CH? You will soon have evaporation and have to add fill water.
 

Txjole

Bronze Supporter
Aug 22, 2018
287
Wylie/TX
3rd time test and I’m at 200. Fill water is 500. What color blue are we looking for a light robin egg or dark like the label on the speed stir? I’m read when it hits a light blue.
 

mknauss

Mod Squad
TFP Expert
Bronze Supporter
May 3, 2014
22,426
Laughlin, NV
I do not understand how your fill water CH can be higher than your pool water? Did you fill the pool from a different source?

Follow CH test directions

Do you have a SpeedStir? It really helps when doing higher level CH testing.