Ozone with or without saltwater

[Katodude]

65 Chlorine is most likely Cal-hypo. So you have not added any CYA to your pool.

Check around from that Spanish provider. You will need to get proper testing equipment.

 

[Katodude]

Here start with this. Can you buy from this place?

K-2006 ¡Al mejor precio! - Analizar Agua

Descripción: Test kit de campo para el análisis de cloro libre/total (FAS-DPD), pH, demanda de ácido, demanda de base, alcalinidad total, dureza c

analizaragua.es

 

[RTeen]

Here start with this. Can you buy from this place?

K-2006 ¡Al mejor precio! - Analizar Agua

Descripción: Test kit de campo para el análisis de cloro libre/total (FAS-DPD), pH, demanda de ácido, demanda de base, alcalinidad total, dureza c

analizaragua.es

I already contacted them. Waiting for response.

 

[Katodude]

Terrific, make sure you get the 2006 model it has both the CYA test and the FAS-DPD test. Both are essential to maintaining a sanitary TFP pool.

Now, if it were me. When you order the test kit. I would start by buying some of that stabilized (ie CYA added, or Dichlor) chlorine and start adding that to your pool. No point in wasting a test to see that you have 0 CYA in your pool (since we really think that is the case).

That is of course if you want to follow the TFP method.

 

[Kellyp]

I tried the poolmath but it doesn’t really work if your regional settings are not fully US. The app displays comma as a decimal point under my settings but then doesn’t like it because it is not a dot. And I don’t want to mess with my regional settings just to make it work. I have Orenda app which is more stable but just tells me directly how much CYA I need to put it in terms of kg, not chlorine containing CYA.

And no there is no titration test for CYA in the market. I found just a test strip which is very crude. According to that I have close to 0 CYA.

I'm sorry you can't make pool math work. I attached a screen shot of effects of adding powder dichlor just to give you an idea of what it will do to FC and CYA in a 24000 gal pool.