sodium

Question is in bold and underlined, the rest is explanation. I just put in a 2 400gpd RO membrane system in my basement mainly to use for my tank top off and water changes but I also piped in three refrigerators and a few drink fillers throughout my house all ran off of a 30 gallon RO pressure...

I keep testing my pH and trusting the Red Sea test kit, which shows a consistent 8.0-8.4 number throughout the day. Since I like this number over that of the probe, I've assumed it was correct. Now, I replaced my Neptune systems double junction probe without of BRS, also double junction. Both...