I have a Ecotech Versa dosing pump and was wondering about the placement. Do I mount it inside the cabinet where the sump is or outside. If mounted inside would the moisture from the sump cause a problem?
I have my dosing pumps inside my stand. Your stand shouldn't be sealed up, so the humidity levels shouldn't be that high. If you're concerned, you can add a small fan to your stand that draws in fresh air.
as the previous response mentioned, unless water has the ability to splash on it i wouldn't be too concerned about moisture.
my tank is nearly 10 years old now and for the majority of that time i've kept my apex, 2 dos pumps, an ato and the controllers for my powerheads and return pump under my stand without incident.