More RODI Help

[rayjay]

Sample water taken before the RO, after the RO and before the DI and after the DI. This will tell you where the problem is in the RODI system if indeed it is a problem in that system, it just means disconnecting a couple of places temporarily for the samples.
Best done after the RODI is running for about a half hour or more.
I'd still be checking the phosphates with another test kit.