Refugium venturi?

[freezerrat]

Hi, I was thinking about a good way to get fuge water back to the display without running it through a pump and chopping up any pods.
Would constructing a venturi into the return line work? The pods would never see a pump.
Venturis are used up north, and probably elsewhere, as a back-up for basement sumps in case of power loss. I'm pretty sure the concept is sound but any thoughts on if it would work as I'm thinking?

 

[ichthyoid]

As mentioned, at least some pods will survive the ordeal. I have read about some studies done on this with conventional impeller type designs, but honestly, I had about as many questions as they answered.

I have researched this topic some, and if you really want to do it with very little shear and/or mechanical impact (both can cause destruction) you should look into:
1) disc pumps, or
2) diaphragm pumps

Here is a link to a Youtube video of a disc pump design, actually pumping live fish. The 'video' is worth a thousand words:

 

[weaglereefer]

ROFL at that video. I can only imagine what those fish are thinking...reminds me of the tube transit systems in NNYC on "Futurama".

 

[hud3339]

Here is a link to a Youtube video of a disc pump design, actually pumping live fish. The 'video' is worth a thousand words:

http://www.youtube.com/watch?v=a7D4TO2L6oE">http://www.youtube.com/watch?v=a7D4TO2L6oE</a>[/QUOTE]

Wow u talking about stressing ur fish