Available in a range of lengths these plastic trough shaped mouldings can be sunken into the ground to create a long, narrow pond.

 

They are primarily intended to form a base pond for a water blade but could be used for other purposes as well. Each size is available with an optional lid. By fitting a lid they can covered with stone or shale to create a hidden reservoir to catch water falling from a feature.

 

The reservoir can then house a submersible pond pump for the feature as well as holding a reservoir of water for circulation through the feature. The lids have a letterbox flap to allow easy access to a pond pump