The spa returns are plumbed in a loop for equal pressure.
The lower pipe plumbed into the jet fitting is the water supply line. The top pipe is for the air supply.
The pool plumbing is completed. The main drains are the piping on the floor and the skimmer is in the center. These are your suction lines.
The plumbed line around the pool is your water return line.
The plumbing from the spa and pool are connected to the sleeves in the coffer. We run our plumbing under the coffers in the parking garage to our equipment room.
We did not have enough clearance in the spa to build our main drains, so we built it underneath hte coffer.
"People rarely succeed unless they have fun in what they are doing." -- Dale Carnegie
These are all the pipes coming from the coffers towards the equipment room.
All piping is plumbed into the equipment room sleeves.