I have a MasterSpa Envison Hot Tub 375 Gallons. I have had it since 11/06/07. In the past month, I've developed a rash, which from pictures and everything else I have seen is hot tub folliculitis!.
My tub uses Cholrine as the santizer.
Several times a week a Test using Aquacheck Free Cholrine Test strips.
My normal results are:
FCI = .05 - 1.5
pH = 6.5 to 7.1
Alk = 110-130
CYA = 150- 300
My prior strips did not test for CYA but instead TH, so for the first two months, I was not sure what the CYA was
I use Granular Dichlor as my santizer, plus Shock Treatment (1.5oz) per week.
From my readings, the CYA is way too high. Could that be a cause of why the FCI can not stay stable around 2 or 3?
When I first put in the Dichlor, the FCI will be around 4 for a day or so.
Someone has suggested using straight Bleach instead of the dichlor for my daily sanitizer