Shnitzel is right. Chop out a few of the bars on the back, itll be more powerful and run issue free for longer. Other pumps with this shape have the same issue. I have two wp40s controlled by my apex. One cord splits and controls them both, was super easy and im having fun programming them.
This also takes the jebao controller out of the mix entirely, so im no longer relying on electronics of unknown quality in there.
They are quieter than my mp40s, which i am a huge fan of. Along the same dc pump vein however my dc6000 waveline is well louder than my external reeflo. I like dc for internal applications, not external
Living the dream