Pool Company Closing Chemical Question

[Spensar]

One reason I read that non-chlorine shock was used is it is not corrosive on the pool cover if the cover is in touch with the water.

[snj2k2se]

OK, that makes sense. The cover only touches the water when we get enough snow to weigh it down.
I think I will ask them to skip this step this year. I shock to around 15 with bleach the night before they come to close the pool anyway.

Thanks for the help!