Return pump(s) for new build (36x30x20)

[Aquattro]

Originally Posted by SeaHorse_Fanatic

Also like the soft start and controllability.

Maybe I'm missing something, but why is this something to like? Don't we just need a pump to put water back into the tank? Why is it a "feature" to start slowly? And why do we want to change it ever? How is this better than "On" at our chosen flow rate?