I think the no 1 problem facing fish farmers is birds, some birds will catch and eat the fish others will leave that many droppings that it can affect the water quality so to keep them out I have constructed a bird net over ponds 2/3/4 I set the net at about 2.3 metres so as to allow access under it.
this is before the net went up
[wpvideo ggbZPTz7]
this after the net went up
[wpvideo DrU4ZCTu]
I just have put a some along the front and create a doorway for access and it will be complete .