Best way to reduce FC?

[PoolStored]

Just to clarify: When you do the 1:1 dilution method, you have to double the reading.

^^^This. If diluted was 95 (always round up), it is 100 diluted, 200 actual.

 

[Pble]

Just to clarify: When you do the 1:1 dilution method, you have to double the reading.

The purpose of the dilution is to half the amount of CYA in the sample you are going to test so that the reading will be within the available scale. But then you have double the reading to "undo" the dilution.

It sounds to me that your CYA still is somewhere around 200.

UGH!!!!! Good catch, you are totally right. I never doubled the number on the tube. Completely forgot so still in the same spot with high CYA

 

[PoolStored]

Time for an 80% drain...read "no drain water exchange"...

Draining - Further Reading

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