I figured something like that would have to work. I've never seen any of the 7/8" bypass fittings, so that took me by surprise.
I was able to find this and ordered the hose. I figure the silicone hose should outlast the pump. Thought I would pass it along to give a heads up if they are changing a pump. Seems our only option on these pumps are the new ones from TBird houses which are made in China.