W weed13 Active Member Jan 14, 2008 #1 I Have A Ph/ppm Meter And When I Add Some Ph Down It Makes The Ppm Rise Is This Normal?
HighwayStar Active Member Jan 14, 2008 #2 adding anything to your res. will change your ppm. unless you add RO (pure), 0 ppm water to 0 ppm RO water
adding anything to your res. will change your ppm. unless you add RO (pure), 0 ppm water to 0 ppm RO water
