Ro ??

[nickelld]

I have tested my tap water and found it to be very low in phosphates. Aside from phosphates, what are the other factors to look at when considering whether or not to use a RO unit. Advice appreciated
David

 

[turningtim]

Heavy metals would be at the top of my list. I just think that there are way to many things that we can't test for to make it feasible to use tap water.
JMO
Tim

 

[bigmac]

TDS's are what you want to test for, your looking for as close to zero as you can get.
FWIW, don't trust your PO4 readings if your using test kits. I have some very high dollar test kits for phosphates. Each one tells me I have zero. I also have a Hannah PO4 Colorimeter. I've had readings as high as 0.09 off my RODI using the meter and zero using the test kits.