New pool owner this year and it's my first time winterizing. I drained the pool below the light, not sure if this is needed or not but better safe the first year, it must have drained almost half the pool to get it that low. Does anyone leave the water level above the light in a region that will get a hard freeze? I found it to be faster to remove the lines from my sand filter and blow out the skimmer line and returns separate. I poured about 5 gallons into the return lines near the filter, I wasn't able to get any into the returns, there is a 90 bend there and I couldn't get the hose down it. I took the skimmer basket out and put the cover on it and the pool cover went over it also and then poured a gallon of antifreeze down the pipe. Why do people plug the hole? Where would the water come from to freeze?
Summary of questions:
Do I need to drain below light in a hard freeze zone?
Do I need to put AF down the returns themselves?
What about all the wet sand in the filter?
This is a start, hopefully this takes care of it.
Thanks for the help