OK.. got the 2250 delivered yesterday. Hooked it up and it definitely has alot of flow. That is, until I put the venturi inline with it. With the venturi installed, the flow slows to a trickle - but did put out mist. One thing I am concerned with is the fact that I got the 384x vs the 584. I'm gonna contact Mazzei and see if this is an inappropriate venturi for the 2250 (which btw is pretty much just an Eheim 1250 pump on a 5 gallon bucket - albeit a nice 5 gallon bucket ) Has anyone here used a Mazzei venturi on a 2250?