I moved into a house last fall. The hot tub was up and running no problems. I had it winterized and now opened it. It’s running fairly well, except this. In the filter housing area there is a small hole, which is obviously supposed to be there. When running the jets on high, water is bubbling out of it filling the housing area. Additionally this little well area (have no idea what t is for) is also bubbling water out til it fills up. It definitely didn’t do this last year. The hot tub is estimated to be 15 years or so old. It’s a hydropool. Hope someone can help me.