[Skulemate]

Originally posted by nicozeg
I consider your pump mods saga to be one of the "greatest invenions for the DIY". It desserves to be on a permanent place in the site for future reference.

I think that's perhaps a bit much. With all due respect to Volenti's work (don't get me wrong, I love much of his work, especially his direct die stuff) he's really only reworking the set-up to correct some of the design compromises that were made in the construction of the pond pumps he's using. A simpler (and likely more expensive) approach would be to use pumps that are already optimized for impellor rotation in only one direction.