Thursday 17 June 2021

Mysterious chlorine loss... SLAM even though not failing entrance criteria?

I completed a SLAM three days ago, including passing all three criteria (water is clear, CC=0, OCLT dropped only 1ppm), but my Chlorine loss is higher than I'd expect.

I needed to add 4ppm to the water a couple days ago and 8 ppm to the water yesterday. I've had a heavy bather load with a many as 7 kids under age 9 a couple days ago, and 5 yesterday, so I attributed it to them, plus the sun in our almost completely unshaded pool.

The posts I've seen about chlorine consumption don't put...

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