You posted chlorine, but you need to post free chlorine and combined chlorine.

You should not have ANY CYA in your indoor pool so you should test for that and it should be non-existent.

Until those numbers are posted, I'm just guessing wildly.

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Please do not guess wildly, sorry.

"I have checked the FCL level and it never went below 3ppm. for months.so I thought it was a proper environment"


FCL 3.0
CC .5

I have available chlorine but I do not shock this indoor pool often. Maybe that is still a need ?

My CC tests low.

No CYA in pool but some on board say, some in an indoor pool might be a good idea, have you read that ?

Does minerals / calicum / in pool every look like tissue chunks ?