I'm glad you brought this up.And imo Ehiem hobby pump is Ac, quiet, runs cool, and the most reliable pump there is. Not sure if it’s apex controllable
I ran an Eheim Universal 1262 on my setup for 8 years without issue and it's a nearly dead-silent pump with some padding. I had to replace an impellor shaft once due to a high calcium issue.
I set the pump on this stuff and it was quieter than the skimmer intake.
Absolutely the best pump vibration stuff I've ever invested in. Just cut a piece to the base size and you have enough for you and all your buddies.
Will float if you lift the pump and don't tie wrap it.