Pool Vacuum Fail: The Hidden Problems Killing Your Suction

No suction on a manual pool vacuum can turn a simple cleanup into a frustrating guessing game, especially when the skimmer looks like it’s working. We break the problem down into a field-tested troubleshooting order that saves time: confirm real skimmer suction safely, then use the filter pressure gauge (PSI) as your truth meter for flow. When pressure is high, suction is usually low, and a dirty DE filter, loaded cartridge filter, or sand filter that needs backwashing can be the whole story....