Where exactly do I need to put antifreeze when closing the pool?

[PoolGate]

My main drain will be blown and air-locked.

My skimmer lines will be blown out entirely and sealed.

My return lines will be blown out entirely and sealed.

So where exactly should I put anti-freeze?

 

[Newdude]

Pull the last union before it leaves the pad and use a bendy funnel to add a gallon on to each return leg. It should find the low spot in the plumbing on its own.

Dump a gallon in each skimmer pipe for the suction side.

 

[Casey]

Pull the last union before it leaves the pad and use a bendy funnel to add a gallon on to each return leg. It should find the low spot in the plumbing on its own.

Dump a gallon in each skimmer pipe for the suction side.

I remove my manifold and pour in each one after I cap the lines. I then blow it through the lines and where ever it sits is where it sits throughout the winter. I figure as long as it mixes with the water left in the lines by blowing it through, I'm good.

Don't mind my mess I have going on. I'm still in process of building my stone patio between pool deck and equipment pad. I just wanted to show my manifold that I remove to blow my lines.