I'm very interested in the maxi-mod. It seems to me that for the DIY mod the critical piece is the impeller shaft which is life dependant (corrosion) based upon cost and type and quality of metal used (Stainless or even titanium?). I suppose if we get enough in for a group buy we may be able to get a bit of a discount on the metal rod.
Doubtful though as we'll only need a couple inches each, we'd need much more than a handful builders to even need 10 feet. Nonetheless, I'd like to build two or three.
This mod can probably be done in one or two sessions once all the materials and tools are gathered. The most time consuming is the inlet filter and then the cure time for the impeller to the shaft.
I would actually like to do this one first, before the protien skimmer - but that's just my two cents.
Thanks,
Chris