So, I did everything as advised on closing my 70's Anthony inground pool except dealing with the pools main drain line and the bottom/floor drain line of the attached "spa".
Of two skimmers, the one closest to the filter/pump etc has the two holes at the bottom, one for suction (filter) and one for the main drain. I disassembled my filter setup and vacuumed all the water from the suction line and plugged for the winter.
Now the skimmer has the main drain hole with water visible....as it should be.
Some tutorials recommend blowing out the main drain line from where the valves are situated near the filter/pump. When air bubbles out from the main drain then turn the valve to air lock the pipe. My question is: How can this be done if the main drain line ends at the bottom of my skimmer? Is my setup different than others?
The abovementioned question not withstanding, I was thinking I would either use a "foam rope" or utilize a plug with Schrader valve to purge the main drain line from the bottom of the skimmer.