The only dumb question is the one not asked.,OK. so another dumb question!
How high should the sump water be?
...
The three adjustments determine sump water level.
1) no floods with power out. (sump low enough the water draining from the display is contained)
2) normal operation returns power returns.
3) drain failure sump runs dry. (sump low enough to runs dry before display floods.)
Obviously display level plays a part also.
But bottom line is you have to test to make sure it works with your system
my .02

