Not sure what to tell you about the powerhead idea...
but holy fish poop, batman!!! That puffer is a poo machine alright! Awesome job on the DIY poo vaccuum!
Neat idea. And HOLY COW!!! I didn't know pet puffers got that big. The ones at our aquarium arou only four or five inches long. I'm morbidly intrigued. Now I need to learn about puffers.
Thanks, guys. Yeah, our puffer is anything but inconspicuous when it comes to relieving himself. He is pretty big and he's very animated. I think we really lucked out when we found him because I have only seen very tiny stars and stripes puffers since. We've seen comparably sized mappa puffers but they've cost 3 times what we paid for him or more, not to mention they've been nowhere near as cute.