I have an in-ground pool with a spill-over spa. There is only one pump for both the pool and spa. There is also a blower for the spa, sitting on its own pipe coming out of the ground. At the end of the pool opposite the pumps and equipment, a pipe with an open "tee" comes out of the ground, along with a second capped pipe. Closer to the spa is a second pipe with an open tee and also a pipe that comes out of the ground and then goes back in. The open "tee" ends are wrapped with screen, which makes me believe that these are air intakes of some sort. The pictures of these 2 sets of pipes are attached. What is the purpose of these pipes, and where they are going or coming from? Thanks!
Likely to be a Suction Limiting Vent System, which is used mostly in Florida.
