Hello, My name is Bobby and I am from Orange County, CA. I am a licensed general contractor but this is my first time digging into pool/spa construction for a spa we are building in our home. I have been doing a lot of research on spas and perimeter overflow spas but I can't seem to find any details schematics on the plumbing. The plan is to build spa that overflows on four sides into a catch basin which would then recirculate the water back into the spa. I would like to know if anyone can provide any schematics on how to properly plumb this design? Also, do you know if it is necessary to use a blower or make-up valve for a spa only set up? or will the pump provide enough pressure to the jets? Any and all help is appreciated.