Undrainable as it is at the very bottom of a valley. Currently it is harvested using a seine but tilapia very quickly learn to escape nets so it can never be completely harvested. Setting up net pens through which water, oxygen, feed and feces can easily pass allows you to rear and harvest all the fish stocked into the net pen when you desire. This makes the fish more vulnerable to theives, but this set of ponds also has a security guard.