Tap water?

[Megalodon]

Originally Posted by paddyob

Last I heard, the ocean was not using ro water.

Kind of depends on what's in everyone's tap water, doesn't it? A number of years ago I nearly killed my tank with copper because of the pipes in my building. The low TDS here in Vancouver (8 ppm) scavenged it like crazy. I'm happy you get away with it but it's generally not good advice to give people without first knowing what's coming out of their tap.