I'm interested to see how your goldfish setups work. I tried something similar with Siamese Fighting Fish, which live in puddles in the natural world, but they died, probably because the water got too hot. However, in the meantime, it definitely reduced the mosquito population.

I'm glad you're having fun with the chicken adventures. The glue is drying on the drain port now, but I'm already thinking the tip-box is probably a better design.