white particles in the hot tub

[archer636]

In Post #4 you said you did an Ahhsome purge 6 weeks ago. So this scale showed up after that?

I misunderstood your question- I just flushed the water 6 weeks ago. No ahhsome

 

[RDspaguy]

Did the spa sit empty for any length of time when you changed the water?

 

[mknauss]

OK -- calcium only is created if your CSI gets above 0.6. So have your water chemistry test results indicated that prior to and during the white flakes showing up?

 

[archer636]

Did the spa sit empty for any length of time when you changed the water?

nope

 

[archer636]

OK -- calcium only is created if your CSI gets above 0.6. So have your water chemistry test results indicated that prior to and during the white flakes showing up?

I didn't measure the calcium prior. I will do that next time

Reading about the CSI, I realize there is another factor here: temperature. I have been keeping higher temperatures than I used to. That combined with a high pH may have been the curlpit (the ozonator is just a coincidence)

 

[mknauss]

Could be. High pH and TA with high temperatures can get you in scaling tendency pretty quick.

To dissolve the calcium you can just drop the CSI to -0.3 or little under and it will dissolve. Might take a bit of time.