Pool Newbie here and am wondering if I vacuum to waste in my above ground pool with the vacuum hose attached to the skimmer do I need to stop vacuuming when the water goes below the skimmer or am I safe as long as the hose remains attached? I have a round skimmer basket and the hose attaches via a round plate with a 90 degree elbow that the vacuum hose attaches to. Also when I tried vacuuming last time with the filter set to filter it plugged up in less than 5 minutes, does the waste setting totally bypass the sand? Thanks in advance.