Quote Originally Posted by Gen
I'm ordering the controller. I want to build one.
Did you order the SMS122 or SMS125?
mountainman Reviewed by mountainman on . Build a ph doser/controller - under $100 - tutorial Ok, so what's a huge issue that we're always dealing with in hydro? Ph of course! Personally, I hate having to deal with it multiple times a day, but I can't afford to spend $1500 on a professional doser system. The following system is only an acid doser, however with some tinkering you could likely make it both acid and base capable, however I will not cover that. Making it function as an acid doser is a simple process that will be extremely easy for anyone. Items needed: 1. Milwaukee Rating: 5