Add moving water to your pond with a Lotus plastic watercourses made from LDPE* or HDPE* plastic which lasts well through all weathers. These look great on their own depending on space or look even better with several together to create a longer stream effect. When installing any waterfalls, it is advisable to conceal a small piece of flexible pond liner underneath any overlapping units to catch any water splash and return into the pond. Position the units on approx. 2cm of dry sand and cement mix to hold the various pieces in their desired position. Use hosepipe at least 25 mms (1 inch) internal diameter from the pump to the top of the waterfall. For advice on which size pump to use, please ask us for assistance. We suggest 1400 Lph of waterfalls for every 15cm width of water coming down the waterfall at whatever height the top of waterfall is from the pond level.