Before

After

This large pool (left) was given a makeover with a fresh planting scheme and a plant filter bed (shown above, and partly concealed under a deck path). It has continued to keep the pool healthy and clear for over 20 years, in spite of increasing fish stocks

Conventional “off the shelf” filters can sometimes struggle to provide effective, affordable and aesthetic solutions on very large ponds.

Carefully designed filter beds use a combination of specialist aggregates, water plants, specific pump flow-rates and sediment-removal facilities to purify the water naturally and give reliable long-term results with low maintenance. We supplement with UV units where appropriate. These designs can also be adapted for use in swimming ponds.

Plant beds which filter a 150,000 litre (33,000 gallon) koi and goldfish pond

This 1.5 million litre (330,000 gallon) swimming pond has recently been installed and planted using techniques originally developed in Germany and Austria. Water is passed through carefully chosen aggregates at the pond edges. This encourages the plants and natural organisms to play their part in keeping the water crystal clear, whilst enhancing biodiversity.

Garden Design - Chris Beardshaw

Whether on a large scale, like the clay-lined lake shown on the right, or on a small town garden pond, natural processes can be drawn on, to assist clear and healthy pool conditions.

Pumps and filters are not a necessity in every situation. In a well designed pond, careful planting, nutrient limitation, routine maintenance, and use of biological remediation products where appropriate, can give good results with only minor seasonal fluctuations.

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