One thing to note on the hanging tetras...

[Leav]

Originally Posted by Billfred

And one other thing about the tetras that may or may not be addressed soon...holding some of them, a loose nut in one piece of the pipe will cause that part to spin around. Know that if you're planning on building a one-pole grabber.

what does that have to do with the nut? are these pvc pipes, or poles?

another thing to note, though might have been said, is that you can't just through them on top, you have to place them as shown in the clips.
I suspect that if you just carelessly put them on top, they might not align easily.

i hope that made sense, it's real early right now, i'm going to prepare our bot for the israeli kickoff (which will be really boring cause i watched the whole thing yesterday )