None of this means every ecosystem pond design Leicester needs attention after every unusual spell of weather, most cope perfectly well, but weather extremes are exactly the kind of trigger that makes a documented, professional look worthwhile rather than waiting for a visible problem to appear months later. At around £150, a pond health audit is a proportionate way to get an honest answer on how the pond has actually fared, rather than guessing from a distance.
Michael Wheat, Founder / Designer at Ponds by Michael Wheat, treats algae as diagnostic information about the pond's overall balance rather than a problem to mask, since the underlying cause tends to resurface if only the symptom is addressed.
Intake and outflow points are worth a visual check too, since leaves, blanket weed and general debris tend to gather there first, restricting flow well before a full blockage develops.
None of this replaces good initial design, which is where planting density, pump sizing and filtration capacity are set from the start, but it is the maintenance habits that keep a well-designed pond performing as intended year after year, distinct from the design decisions made before construction ever begins.
Noise is the second signal. A pump that has become louder, developed a rattle, or is cycling unusually is generally worth noting down and mentioning at the next maintenance visit, even if nothing looks obviously wrong yet, since mechanical wear tends to announce itself audibly before it announces itself as a full failure.
For anyone who has owned a pond for a few years without a formal check-up, or who has recently taken on a garden with an existing pond of unknown history, an audit is a sensible starting point. It gives a documented picture of where the pond stands today, which then informs any decision about ongoing maintenance or further work, rather than committing to a fix before the actual problem has been identified.