Imagine if you will, an empty measuring cup and a 16 ounce water bottle full of water. If you were to open the water bottle and turn it upside down and hold this bottle so that the opening of the bottle was at the half cup line inside the measuring cup, the water will empty out of the bottle only to the point of the opening of the bottle. So it will fill to the half cup line. The water will not continue to come out of the bottle. Just like a water cooler works in your home...the water only dispenses as far as the opening of the jug when turned over.
So you will want your water source opening below the top of the pvc and you can adjust the height of the water by how high you place the water source opening.
So you will want your water source opening below the top of the pvc and you can adjust the height of the water by how high you place the water source opening.
