Which Ward water test

[JONNYROTTEN]

It looks like the brewers test offers Iron and Phosphorous and the home water test doesn't.Everything else is the same. The brewers test cost a little more. I'm know I'm not going with an RO system any time soon. I'm thinking my main concern is PH. How does Iron and Phosphorous affect beer? How is it adjusted if its off? Should I get the brewers test?

 

[RoadKing]

If ya think you might have high iron or phosphorus, or are just not sure,
spend the couple extra bucks and get the brewers test.
Iron can ruin your beer.