I just want to say I have a 6015, I use it to mix salt water. Not the most glorious life for such a great little pump.. But just the other night, one of my mp10 ceramic shafts had cracked... With no other choice, I decided lets put the little 6015 in place of the mp10, surely it won't be that bad, right?
Truth be told... It smoked the mp10.
Yeah, yeah. It's not controllable, can't control it from my phone. blah blah... But my mp10's were running at 100% and weren't giving me enough flow, so they weren't really controllable either in my situation.
The tunze put out more flow, more varied flow, and a wider flow dispersion than the mp10.
So don't sleep on the little 6015 because it's only like 500gph --- Put it next to an mp10 and realize things aren't always ideal just because of semantics on paper.