gwdixon
Elite Member
If I understand you right, just watering trees, gravity flow will be fine and a pump really is not needed. That is putting water onto the ground at base of trees if I understand correctly.
I tried the gravity flow thing. Flow rhymes with slow - which is what it is. Painfully slow. Keeping the tank low to the ground makes it even slower. As the tank drains it gets slower yet. Did I mention "slow"?
I bought a little Honda water pump. Not the smallest but the next size up. It is a WX15 - 72 gallon/minute but it is run at about half throttle.
The pump cut the watering time in half. It is still 5 hours with all the moving of the tank, dragging hoses, and refilling the 450 gallons.