Why do I have to submerge my emergency drain in Herbie but not in Bean Animal?

[BigJohnny]

It is a rare case indeed if I get emergency drain to run completely dry although that is my intent. The slight trickle that is more often than not is not load and when it picks up I can distinguish it right away. Skimmer fluctuations, ato, dosing schedules all can cause slight variations that may impact emergency drain but that's what it is there for. Putting in a new sump tomorrow and expect I will be tweeking quite a bit for a couple days. Lol.

Great thanks. You meant the slight trickle is not "loud" right? Just making sure. How high is your e-drain outlet above the water line in your sump?