I have a gunite inground pool, about 21,000 gallons of water, and a Hayward DE filter. One of the jets is somehow connected to a small pipe near where an old big pool slide used to be. The small pipe is exposed by about a couple of inches above the cement. The pipe causes the jet to blow out at a high pressure and makes a gurgling sound. This does not affect the pump pressure, but I'd like to fix it. Here is what it looks like.