This DIY Kit will allow you to build a (1.5 x 1.75m pond) at 2 ft deep. Equating to a total of (1500) litres.
 
Pond kit Smart 1,500litres -
Pond Dimensions: Length 1.5m; Width 1.75m; Depth 0.6m
Filter Kit: BioSmart Set 7,000
Liner: Greenseal .75mm thick 3.5m x 3.5m
Underlay: 250 gsm (white)
Total Litres: 1,500 (Approx)
Max Stocking density: 15 x Goldfish or small Native species