Allows you to drain water off from the edges. Some say it gives ice a place to expand into instead of pushing out. If the ice is thick it would go below the floats or pillow, so I'm not sold.
Hello , This thread has been inactive for over 60 days. New postings here are unlikely to be seen or responded to by other members. For better visibility, consider Starting A New Thread.
Welcome to TFP! For a wealth of pool care information please check out our free Pool School. If you are in need of specific help then we encourage you to Register and ask us here in the forum!