will the plastic bird netting with 1" squares actually keep the heron out? Is
it strong enough? And will the heron stop coming if the pond is netted? Can I
just put the net about 4" above the water and get it taunt by placing rocks on
it? Also I put 4" black pipe in the pond but had to put rocks in it to get it
to sink so now I don't think the bigger fish can get thru it, any other
suggestion how to sink it without blocking the pipe? Thanks for any info