Interesting Problem?!

One of my bays quit working so I started trouble shooting it and realized the pump was not receiving water.

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The first picture shows what the supply hose is supposed to do and the second picture shows what it is doing now.  The last picture shows the crap in the hose when I stuffed a 3/8″ hose down it.  I think that when it froze the hose broke down or something and clogged up?  I really have no idea what caused this problem.  Any ideas?