Calcium whack

[Ndx]

Hi Guys,

Fresh fill... Store tested water and said to add 9 caps of Dazzle TH+ over 9 hours. 3x3

Done that now water is cloudy.

Tested CA and Im at 105 ( ColorQ )
Strips show range of 100 as well.

Level tested prior to adding the TH+ was 98, tested at the store.

I cant believe that 9 caps increased only by 7 points and the cloudiness

What is going on

Im color blind so I cant use Taylor kit strip was read by a friend

Thx

[RDspaguy]

I have no idea what dazzle th+ actually is or what concentrations of chemicals are in it, so couldn't say what is normal for that. Significant changes to ph, alk, or calcium can cause temporary clouding. High alk can cause clouding and scale as well. 

[MrX]

...

[waterbear]

If I am not mistaken Dazzle is a Canadian brand of spa chemicals based in Ontario and TH+ is a total hardness increaser .

How did the store test?  If it used a meter also then you need to be aware of the limitations of colorimetric testing of l hardness,  because of limitation of the chemistry of a colorimetric test vs. a titration test (drop count such as used by Taylor Technologies). It is entirely possible that the harness has increased but the readings are not reflecting the actual increase but are still within the error range for the colorimetric test used. Titration tests (drop count), such as used by Taylor test kits, are much more dependable for testing CH for this reason. LaMotte hardness tests are better than strips but still don't match Taylor in giving results that correspond accurately to the actual level of the parameter being tested, IMHO.

Are you sure you can't see the color changes in a Taylor K-2006 (FAS-DPD testing for chlorine) or K-2106 (FAS-DPD testing for Bromine)?

 These videos from Taylor Technologies show all the tests.

https://www.taylortechnologies.com/wp/page/231/k-2006-complete-kit-with-fas-dpd

You might be surprised that you can differentiate the color changes. FAS-DPD testing is a distince color change from pink to colorless that colorblind people are able to distinguish as opposed to DPD testing which is comparing  very close shades of red on a comparator block.

CH is a titration (drop counting) with a distinct color change from pink to blue

TA is a titration with a color change from green to red (I knew someone who was color blind, red-green color blindness, who could still see the change with this test, YMMV)

CYA is a turbidity (cloudiness) test that has nothing to do with color (not applicable to bromine so not included in the K-2106 kit)

pH is a color matching test ranging from orange/yellow, through red, to purple. This might be a problem but if you view the Taylor videos you might be able to distinguish the color blocks on their comparative.