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High combined chlorine


Jackbt

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I just got a 2nd hand caldera Kauai 

I have purged the spa 3 times all with ahhsome and once with ahhsome and vinegar on 60 hr soak.

just did a fresh fill 2 days ago

my combined chlorine seems to be high

cal: 120

ta: 80

ph:7.4 currently aerating

fc: 2

cc: 3

spa is 230 gal.

chlorine demand seems to be 100% over 24hrs
 

10am this morning

fc 1.5

cc 2.5

2pm 

fc:0

cc:1.5 left cover off in sun the whole time

i added 1 tsp of Dichlor at bc Fc was 0.

now it’s 5:30 and we are ate current readings at the top.

any guidance would be helpful. 
 

Just a side note. ph does drift up. Doesn’t haven’t ozonator. 
 

Thank you

jack 

 

 

 

 

 

 

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