A curtain of water tumbling down to form a waterfall can have varying widths and heights. As the thickness of the water lm depends on these two factors. So will the quantity of water that the pump is required to circulate. Water is pumped by a concealed unit from a lower basin, through one or more pressure lines, into a trough with a shaped over ow, the width and height of which determine the pattern of the waterfall. Most arrangements require an adjustable lip at the beginning of the over ow and a weir edge on the other side. With wide waterfalls, the lip should be adjusted perfectly level to prevent the
water film from breaking up. It is also important that leaves and dirt do not collect on either the fall-away or lip,
IMPORTANT:
Lip and weir edge should be kept clean.
Avoid sitting under trees (leaves and twigs).
Try to protect from wind.
Ensure pump is correctly sized.
