Step 6: Testing the Pump
Using additional PVC pipe and fittings opens up many different options. The imagination is the limitation.
You could try making this into a pump to move water vertically, or leverage it with your feet for more of a bilge pump type approach.
This pump seemed to move just over 2 cups of water per cycle.
With the vertical pump approach, I could pump around 3 gallons per minute.
With the horizontal approach, I could move over 5 gallons per minute because I could put my weight into it and move it faster.