I started playing around with blowing my lines out. I think I maybe on to it. I removed the plug from the filter, then took out that clear tube that has the copper and titanium eco smart bars. That gave me access to my three eyeball returns. I stuck the vacum hose in there and turned it on. You could see the cover moving in all three spots. I then pulled back the cover to reveal one return and watched. I let the air blow for about 10 minutes. Then I waited five minutes and blew them out for ten more minutes. I took that one eyeball of and put one winter cover on. They are plastic with an o ring. Are these good? I have one gallon of antifreeze made for pools, that the previous owner left. Do I take a funnel and small hose and pour some antifreeze down each return?
Will it just run back into the pool?