I have an 9K gallon'ish fiberglass pool that the CYA is running at 80ppm. I need to drain about 1/2 of the water to bring that down to a more manageable level. My question is how to do this the easiest way?
I know that I can use a sump pump and pump it out, but I really don't want to buy one to use once or twice per year. I have a cartridge type set up with an air release valve on the top which when fully bleed puts out an impressive amount of water. Can I rig a hose to that air valve and let the pool pump drain it through that valve without damaging anything?