1800 Litre Round Rigid Pond Liner


2 koi carp may not seem like a lot but they can grow up to 24 inches and up to 36 inches for jumbo koi and they need plenty of room to maneuver and grow. You are able to stock more goldfish or smaller fish just remember the general rule of thumb for keeping fish in your pond is to have 1 square foot surface area for every inch of fish.




1800 Litre Round Rigid Pond Liner


Here customers can view our 1800 Litre Round Rigid Pond Liner. It is a one piece freestanding preformed round pond. It measures at 72″ (183 cm) diameter and 27″ (69 cm) deep and has a volume of 397 Gallons (1802 litres). Tapers from top to bottom at 5 degrees inclusive. Weight when empty 30 kgs. This rigid pond liner is environmentally friendly as it is manufactured from food grade chemically inert polyethylene. This liner is easy to install and can be used as raised free-standing pond, half raised or buried into the ground. Installing one of our liners supports and attracts diverse wildlife. We advise that if you keep the water well filtered you can keep up to 2 koi carp but no more in this size pond.


This rigid koi pond is highly durable and very strong so much so we offer a 25 year guarantee! The liner is designed to withstand all weather conditions and will not crack. Please ensure the pond is installed correctly by making sure the ground is flat so that the water isn’t putting too much pressure on one side of the tank.


Pond volume = 397 gallons (1802 litres)

Largest main dimensions –

Diameter = 183 cm (72″)

Depth = 69 cm (27″)


Black box filtration system

If you are looking at keeping fish in this size liner we suggest adding the black box filtration system. This system includes all the components to keep your pond water quality to a standard that will ensure your fish stay healthy. Included in this system is the 1800 Litre Round Rigid Pond Liner, a pond pump with 2000 litre per hour flow and attractive fountain feature, a mega black box with 11w UV,  2 metres of 20mm flexible pipe and hose clip to ensure the flexible pipe is secure. Setup is straightforward, the pond pump sits at the bottom of the pond with the fountain feature poking out the water. The flexible pipe then attaches to the pump which goes to the black box filter connect via a stepped hose connector and then the water trickles out of the black box filter back into pond.

Contact us via product enquiry if you require any extra information.








Expected delivery time of between 2 and 3 weeks. Other orders in your nearby area may speed up this process significantly.

Price quoted includes all Costs and Delivery to UK mainland.


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Additional information

Weight 30 kg
Dimensions 183 × 183 × 69 cm

On its own, With a pump, With a pump & blackbox filtration system

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