I'm using a Milwaukee MA 957 regulator and a SMS 122 pH controller. I've heard mixed reviews about the MA 957 but mine has been fine so far. You could use a timer instead of the pH controller. I just happened to get a good deal on a combo package so I'm using the controller. If you look around on bid sites you can usually get a good deal. I also run an Azoo regulator and Pinpoint pH controller on my 29g planted. That was a combo deal from Drs. Foster and Smith and was quite expensive but has worked flawlessly for the last 5 years.