02-20-2019, 05:10 PM
Ah thanks whitebox, that makes sense and now I see why other aquarium controllers don't offer it, that would only be useful if your over/under 7.0. There probably isn't a tank under 7.0 so there would never be a need for calibrating both sides. I spent so much time looking for an answer and found a couple others at some point searching the same. Now I know I am going to add it to the circuit but not offer the option on the controller. I always thought it was useful in any scenario.