I have an inground pool with an elevated spa that spill over into the pool. I just had it remoded and resurfaced with Wet Edge pebble (previously had plaster). I have always had air and bubbles coming out of the spa jets along with water. However after the remodel, only water is coming out; no air. I don't not have a blower. I only have an air intake pipe that worked fine before the remodel. I have looked for debris and haven't found any. I have also blown air down the air intake pipe with a shop vac and created air and bubbles in my spa. When I turn the shop vac off, the bubble disappear. The air intake pipe is right next to my spa. Nothing changes when I go between spa mode and have the water spill over into the pool. I also noticed there is no suction when I put my hand over the air intake pipe. When I look down the pipe I can see a little water. What could be cause the lack of air intake and what should I do?