I was able to take the bottom of the pipe off and it did not have a blockage. No thousands of worms in the pipe
The air tube is clear. It's still having a minor siphon happening. Now it's about a 1/2 inch that the overflow is going down and then more forceful water into the sump. We cleaned everything in the sump and the overflow area. Took out almost 6 cups of worms from the overflow. Guess I'm overfeeding.
Any other thoughts as to why it might still have a slight siphon happening?
Thanks again for all the help.