I'm just wondering if the ponds are too small for the number and size of goldfish in them. These are lined "ornamental" ponds with a good layer of
leaf mold and stuff on the bottoms, but I don't know if they would naturally make enough food for the fish on their own.
There are lots of plants in though.
Of course it is getting colder now and fish eat much less and are less active as the water temp drops, so I'm not afraid of them starving, just maintaining them.