It seems that I forgot to ask another question. Guess I jumped the gun in posting!
What kind of flow do I want to come out of a (this) spray bar? I've never seen one. Is the water suppose to come out hard and fast, like holding your finger over a hose, or slow, like it does from a normal hang-over-the-edge filter?
Depends on the size of the holes. Smaller holes it comes out faster. If you make the holes too big, it will just kind of blubber out of the first few holes. You have extra pieces, play around with it to see how you like it in the tank.
The SunSun/Aquatop filter uses 5/8" tubing, so I got a bit of that (~3 inches of it), stuck it into the filter tubing, then put the 1/2" tubing of the spraybar into that and sealed it with acrylic cement and extra silicone.