I want to do something a little unorthodox and figured this would be a good place to ask. I'm getting ready to drop the water level of my pool so I can winterize the lines. I also have a spa (that is completely separate from the pool) that I would like to empty and refill before the winter. That got me thinking why not use 520 gallons of my perfectly balanced pool water that is going to otherwise be dumped to refill the spa. The question I have is does anyone know if there is a fitting that can screw into a standard wall return that would allow me to attach a standard vac hose to it? The thinking is to use one of the return lines to pump water through the vac hose with the other end sitting in the spa to quickly refill it.
The water rates are getting a little crazy here and I figure using the pool water that I am going to discard seems like a good idea vs paying water and sewer for the 520 gallons I need. The alternate solution is using a submersible pump to achieve the same goal, but that would obviously take a lot longer.