I have both BRS 1.1 and the Bubble Magnus dosser, I came home one night to a white tank as one of the dosing pumps (Bubble Magnus) heads popped off the unit and because of my setup emptied little under 1/4 gallon of soda ash into the DT. The BRS are meant to be controlled with digital timer or better yet a Apex unit, it is a bit more setup and programming with the Apex but this site makes it super easy. The BRS Pumps are designed well and work great. The DOS is another excellent option and uses stepper motor these are some of the same motors used in CNC Bridgeport units for precision machining the reliability it top notch! What ever dosing system you go with I recommend you research the unit, pull a copy of the owners manual/setup to fully understand what you're getting and how it's to be setup.
