Maintainance app, or pen and paper?

[mike31154]

Originally Posted by mikellini

What water were you testing with the script? That is a good way to test if your carbon blocks, as long as you're testing the waste water and not water that has gone through the membrane. You should still check out those videos, great info

I disconnected the line at the output of the carbon block (before the RO membrane) & tested there for chlorine. I'll check out the vids too, but this discussion needs another thread perhaps, we're getting off topic of app vs pen & paper!

In the photo below the left strip is a sample after the carbon stage, the right strip is tap water.