What should I do if my pond freezes?

Do not smash pond ice. Freshwater Habitats Trust says most British freshwater plants and animals are adapted to cold snaps, so a wildlife pond often needs no intervention. A fish pond needs closer attention because oxygen can fall under a prolonged cover.

The RHS advises melting an opening gently with a hot pan placed on the surface rather than striking the ice. A bubble fountain or pump can add movement, but use equipment only as its maker directs and avoid drawing the coldest surface water through a deep pond. Keep snow from blocking all light to submerged plants.

Never step onto pond ice. Keep children away from the edge and remember that a floating ball or other object can attract attention. RoSPA's safety guidance says small children should be separated from garden ponds by a safe fence, cover or removal of the hazard.

If fish appear distressed, contact an aquatic specialist or vet. This page cannot diagnose water quality or fish health.

Prepare before the cold spell

Remove excessive fallen leaves before they decay, but do not strip the pond of every stem and refuge. Check any pump or air equipment against its maker's winter instructions while conditions are dry and safe. Keep cables and connectors protected from damage. For a wildlife pond, maintain shelter on land as well as in the water: Freshwater Habitats Trust recommends longer grass, overgrown corners and piles of wood or stone. After snow, clear only enough to let light reach part of the pond without walking on the ice.

Sources

• Freshwater Habitats Trust: frequently asked questions — accessed 14 November 2026.
• RHS: pond care — accessed 14 November 2026.
• RoSPA: Safe at Home booklet — accessed 14 November 2026.

More from Pond Setup Guide

Use the full pond winter-care guide and child-safety guide. Aeration is defined in the pond glossary.