kierserite tile cleaning

[4x4tx]

Of course they don’t know … welcome to the pool service industry, chemistry knowledge is not necessary.

I use the K-1722 Hardness kit (Calcium and Total).

Drop Test, Hardness (calcium/total), EDTA, 1 drop = 10 ppm

TH - CH = Magnesium hardness

Thanks. They used two 50lb bags apparently but claimed they sucked out 75%.

 

[JoyfulNoise]

Thanks. They used two 50lb bags apparently but claimed they sucked out 75%.

Yeah … that’s a “pull it out of their rear-end” estimate. No way to know except to measure it.

 

[jwcod]

Does glass bead blasting (with Kiesirite) affect chlorine levels?