That is actually what I use in my SWG. However I brush and brush some more till it is all dissolved because the ppm will increase until all of it is dissolved. I also do not like any chemicals sitting on the floor of my liner, high concentrations of anything is not good. Sometimes I'll throw some salt in a sock or if I'm feeling frisky I'll add the salt to my Polaris debris collector bag and get it spread it that way just don't over load it to much.