Pool Filter Not Working? Signs Your Filter Is Failing and What to Do
Your pump runs, you dose the chemicals, and the water still will not sparkle. Nine times out of ten the quiet culprit is the filter — the component everyone forgets until it fails.
Signs your filter is struggling
- Water that stays dull or cloudy no matter how much you dose
- Pressure gauge running high, or weak flow from the return jets
- Sand or debris blowing back into the pool
- Shorter and shorter intervals between backwashes
Clean, repair or replace?
A dirty filter gets cleaned or backwashed and recovers. A channelled sand bed, cracked laterals or a filter simply too small for the pool will never perform, however often you clean it — Bali pools need generously sized filtration because of the heat and debris load. If the filter is more than 5–7 years old and underperforming, replacement usually beats repeated servicing.
Why it matters here
In Bali’s climate, weak filtration is the fast lane to a green pool: whatever the filter misses becomes algae food in 30-degree water. A correctly sized, healthy filter is cheaper than the rescues its absence causes.
Not sure if it is the filter or the pump? We diagnose the whole system in one visit.
Get your filtration checked
One survey tells you whether to clean, repair or replace — with a written quote before any work.