The other day I went out in the morning, drained and rinsed the ducks pool, and put the hose in it to fill.
That evening around dinner time I went, “FUCK!” and ran down to find three very happy ducks and turn off the hose.
So I added this automatic filler. Now when I rinse the pool it will fill to a couple of inches from the top and stop.
Ducking autocucumber!