Building a garden pond costs 100 to 800 pounds depending on size and materials. A butyl rubber liner lasts 40-50 years and suits any shape. Preformed rigid ponds install faster but limit design. Ponds deeper than 60cm support goldfish year-round without a heater. Every pond needs a pump sized at half the total water volume per hour and a biological filter to keep water clear.
Key takeaways
- Butyl rubber (EPDM) is the best liner for most garden ponds, lasting 40-50 years
- A 2m x 3m lined pond costs 300-500 pounds including pump, filter, and plants
- Goldfish need a minimum depth of 60cm to survive UK winters without a heater
- Size your pump to turn over half the pond volume per hour for clear water
- Autumn is the best time to build — soil is workable and the pond matures over winter
- Five common mistakes account for most failed ponds — all are avoidable with planning
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Our team produces practical UK gardening guidance from source research, contributor records and established horticultural practice. Editorial standards are overseen by Matt W.
