Tada:
Here's the grazing station with a cube of Hikari bloodworms in it:


And here is Bruce trying to figure out how to get to it. I'll have to try it with Bob (the female) if Bruce doesn't figure it out. The female generally seems to be a little smarter...


I am pleased though that he immediately showed interest in it and I am so happy we chose a clear tube.
Bob and Bruce know to expect food from the Kent Sea Squirt and the Sea Squirt fits perfectly into the clear tube. It was really the Sea Squirt that caught their attention and made them aware there's food in the grazing station.

I am hopeful this will work.