Why would my pool filtration system have this thin tube that does nothing but let water bypass the filter? : r/pools

My neighbors are filling a large pool via well water, causing my

Heater issue : r/pools

So my filter burst. Now what : r/pools

BENTISM 14 3000GPH 3/4HP Saltwater system Sand Filter Swimming

Pump/skimmer question : r/AboveGroundPools

Common Causes of Air in Your Pool's Pump & Filter System - EZ

What Size Pool Filter Do I Need?

Pond filtration systems for natural pools - Fluidra

Pool Problems / Troubleshooting