Pool safe pressure cleaning chemicals?

[JohnT]

Hi
I don't know if this is the correct forum to post this question, but I am going to pressure wash my concrete deck this weekend and I'm sure I will get a fair amount of dirty water/chemicals in the pool. Does anyone know what chemicals I can safely use? I'm sure I'll have to adjust the balance somewhat afterward. Thanks.
Warren

Unless you have a need, you shouldn't need chemicals to pressure wash concrete unless you have staining issues. The pressure washer will cut the top layer of concrete off if you want it to with just water.