I have to imagine that an aquarium pump would be way cheaper than a 120v sump pump. I've never used one all the way across the yard, but a pond pump would do it. Might need a valve on the end if you have a serious pump so you don't blast your marigolds right out of the dirt.
Now, in the fantasy world where your pond is higher than what you want to water and you only have a single duck, cutting the top off of an IBC container would be nice and easy since it has a drain built right in.
Now, in the fantasy world where your pond is higher than what you want to water and you only have a single duck, cutting the top off of an IBC container would be nice and easy since it has a drain built right in.