This pump has many uses. The Magic Pump was an idea Ken had, born from frustration after doing sand changes which results in a sore back, wasted time and cut hands.
Change your pool filter sand
Transport grey water
Unblocks drain
Excellent prawn/bait pump
Empty Aquariums
Removes water from your boat
The pump is made up of a pipe, a handle and a metal rod. You move the Handle up and down according to what you want to perform. If you want to hold a certain amount of liquid or wet sand in the pump pipe then you hold the handle in the appropriate position.
Sucks up. Holds volume inside. Pushes contents out when required. Remember it works for liquid and wet sand.