Mega church update

Fellas, I got questions, please. SO, 4% would be 2 to 1, right?

Rick, you rinse with PW, right?

DanC, you rinse with 12v? I get my 12v fatboy tomorrow thanks to @Atlas1, and it’s time to query the pros. Does it hurt the pump to keep running when I have the nozzle turned off?

HUH? Please elaborate.