I'm getting a lot of grief from the "pool guy" who supplies some of our chemicals.
He says that until I heat the pool my test readings are not accurate.
I've never heard of that before but he's got me doubting myself.
We are not opening until the 15th so I did not want to turn on the heat until this Sunday.
Is there any truth to the "pool guys" cold water theroy?
Water temp 10 C