Buy Pond Liners, Underlay and Pond Pumps Online         

Liners Online supply superior quality Epalyn and Butyl rubber pond liners, PVC liners, protective underlay, pond pumps, fountain pumps and other pond accessories. We are an online retailer and are therefore able to supply all items at wholesale prices.

Our pond pumps are the best priced on the UK market and of equivalent quality to other well known brands.

Want to Calculate Your Pond Liner Size and Price?

Click here to use our pond calculator,
which will automatically calculate the
size liner you require*.              

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To calculate the size you need to order, take the deepest depth, the longest length and longest width measurements of the hole you have dug for your water feature. Type the dimensions into our calculator. The calculator will then give you the dimensions you need to order. Please note that PVC can be ordered to a maximum width of 8 meters whereas there are no restrictions to Epalyn and Butyl orders. 

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DELIVERY: Our aim is to deliver your pond liner order within 5 working days. For orders of larger liners and at times of extreme demand this may be exceeded.

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Pond Pump Size Calculation

The amount of work required by a pond pump depends both on the height and the distance the water must be carried. For every 3 meters of horizontal distance the water must be moved, you need to factor in a height of 0.3 meters. The total height is determined by measuring from the water level of the pond to the top of the waterfall or fountain.

A pond pump should ideally circulate the total volume every hour but once every two hours would suffice as an absolute minimum. To calculate the volume of your pond you should multiply the surface area (in square metres ) of your pond by the average depth (in metres ), which will give the pond volume in cubic metres. Every cubic metre of pond volume will contain approximately 220 imperial gallons of water. So, a pond of 15 cubic metres will contain approximately 3,300 gallons of water. From this figure, you can determine the flow rate needed for the proper circulation of the water.

There are, however a number other variables involved that can affect flow rates such as the length and diameter of the pipework, the number of bends and tightness of each, type of filter used and whether a fountain is being run off the same pump. With so many possible variables, it is advisable to go for a pump that gives a higher flow rate than you think you need as the flow rate can always be restricted to reduce it, but you cannot increase flow rates above the pumps maximum output.

For further advice or to order your pond pump, please visit our site and choose the pump model most suitable for your size garden pond or contact us on 01526 399 033.