It is best if the pool volleyball net is at least 2.5-3 feet high. This will ensure that kids and adults both can play in the pool. Also, this measurement is applicable for pools that have a depth of 3.5-4 feet. This gives a total height of seven feet once the net is in place.
However, if kids are going to play with it, it is best to keep the net a little lower for them to be able to throw the balls in the right way.