i dont get how it works. i know theres some correlation between runoff ppm and res ppm. but which way does the osmosis go? im reading 1250 at the res but 1330 runoff. is that bad?
dank4life Reviewed by dank4life on . i dont understand testing runoff ppm i dont get how it works. i know theres some correlation between runoff ppm and res ppm. but which way does the osmosis go? im reading 1250 at the res but 1330 runoff. is that bad? Rating: 5