TX/Dallas | 18K ? gal. | Plaster | Jandy valves, Jandy panel, Aqualink RS4
Pentair Challenger Fixed 2hp | SWG AquaPure PLC1400*repl 2015 | Pentair Clean & Clear 420
Your filter could not fill with water unless the air has an escape route. That tube reaches almost to the top of your filter, and as water is pumped into the filter then air is forced out thru the tube. The mesh is to prevent any debris from getting into the tube and blocking it up. You need to clean off that mesh every time you clean the filter, if there are holes in the mesh, then replace the mesh.
20,000 gal, 52'x17' kidney shaped IG, Pebble Tec, IntelliPro P6E6VS4H-209L pump. Intellichlor IC40 SWG.
300 sf Sta-Rite System 3 cartridge filter. Poolvergnuegen 4-wheel suction pool cleaner. TF-100 test kit.