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I'm not exactly sure what type of heater this was (I think Pentair natural gas), but I could not get this drain plug out for the life of me. It's a metal bolt. I soaked it with PB blast to try to loosen it but it only continued to strip. I blew the water out of the heater with a Cyclone. I also...

I own a small pool company in Massachusetts, and the past companies I have worked for only would put antifreeze in the skimmers, not the returns. If a pool has multiple returns, I always go back and forth individualizing each return until no water comes out and then plug it up. About halfway...

I own a very small pool company and am winterizing a pool with a main drain on the size of the wall in the shallow end. I did not want to drain below it as it is much lower than the returns. The line has its own valve. Do you always follow the same procedures as air locking a main drain? Does...