10-18-2012, 11:47 PM
Join Date: Oct 2012
| | Re: Do you use RO?
about half RO in a couple small tanks, mostly tap water. I got in trouble with a larger tank and RO, I found the pH below 4.5, the limit of my test kit.
My tap water is about 55 GH, 12 KH. About 1000 tds.