Rated 4 out of 5 by 1
Rated 4 out of 5 by Longtimefishgeek This product has great features
Both of these monitor/controllers have the great feature of switching both above and below your setpoints. They seem durable and reliable, although the pH unit has a switching relay that makes an awful racket while it's trying to switch the "below the setpoint" outlet on or off. I give the pH controller a rating of 3 because of the sketchy relay, and a rating of 5 for the ORP controller (Because it's silent). So both of their ratings averages out to a 4...
February 16, 2016