Recently moved to a new house and the pool came with an autofiller, never had one before but I noticed that it looked like overflow hole was clogged and not sure if this was done by design? Can anyone think of a reason this would be clogged on purpose. I live in the desert and pulled some of the material out which didn't look like anything that would occur in the area. Was going to clean it all out with a snake but wanted to confirm this wasnt clogged on purpose.