It is also very
effective at preventing
leaves falling into the
pond which can cause
water quality
problems.

This Pond
Cover Net can provide a
cost-effective
heron-proof solution if
carefully maintained. A
heron can put its neck
through mesh that is 5 cm
knot to knot and it has a
reach of 60 cm. The
netting must therefore
either have a small
enough mesh size (2.5 cm
to make sure it is small
enough not to trap the
bird) or be at least 60
cm above the water. The
net also needs to be kept
taut to prevent herons
weighing it down.