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Frustrating chemical smell from steam...

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Gibson00:
Really not sure what is causing this...

Water 1 month old with Spa Marvel added.  Last maybe 10 days I notice the water looks fine, chemical levels good, but the steam off the water has a chemical smell to it.

So I shocked it to 12ppm with dichlor yesterday.  Fast forward to tonight, levels (taylor test kit) are:

chlorine - 3.5ppm
TA - 90
ph - 7.6

Steam still has chemical smell.  What am I missing??  I never really use MPS, just dichlor.  Should I try a shock with MPS, would that clear up something that chlorine doesnt, that could be causing the smell?

A.O.:
What is your CYA level and the CC level? Using dichlor to get your FC that high would raise that CYA way high which will counter act the FC to a degree. The smell I'm thinking is a high CC level.

Gibson00:
OK just took three readings with my taylor kit...

free chlorine - 2.5ppm

combined chlorine - 1ppm

CYA - 65

Tman122:
When do you add your dichlor or bleach?

Gibson00:
I typically add dichlor after bathing.  Usually with the goal to raise it up to roughly 4-5ppm, which would then be back down to 1-3ppm when we get in the next day.
And shock to about 12ppm maybe every 10 days.

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