Yup the pump is sucking up...(no pun intended). But also look at the discharge tube. It going into the container at roughly the same level down from the pump. The siphon effect on the downhill side should negate the uphill pull on the inlet side, right?

Anyway, I just checked the 2.5 gallon container to see how close it was to 2.5 gallons. Using a measuring cup, it is 41.5 cups from empty, right to the tippy top, overflowing point. (Nice to know I'm not getting shorted distilled water when I'm buying it. ) Therefore, do the math and you come up with me filling 2.5 gallons, plus 1.5 cups. So, my numbers are actually a touch low. Not enough low for me to go recalculate the spreadsheet (though I probably will anyway....).

For timing, I bought a digital stopwatch just for this test. My lab assistant operated the stopwatch while I yelled "go" and "stop". I think the times are good since there is fairly small variance in the numbers. I also double checked the math. It's good too. So, there you have it. The flow is the flow.

I think this also possibly shows that the FuZion kicks butt on flow?

I would like to see others get in the "lab" and do this. So far, I only know of Alex that has posted actual flow data. I would be curious to know how other blocks and configurations perform. Please point me to the thread if others have already done this. Thanks.
Regards,
Bob