Friday, 17 December 2021

Chlorine levels staying low with SWG and high phospates

Hello,

I have a peculiar problem I would like some thoughts about.

Several months ago--mid-September--I tested my water and the chlorine was non-existent. CCs were also low--0.5. The water was staying clear but there was algae growing in some of the waterline tile grout which has been pitted and cracked in some places since we moved here 4 years ago. In some places the pitting has created holes in the grout leading to recesses behind the tiles. And I was lax about scrubbing it this year...

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