Yeah if you used clamps we're not talking about the same thing. I bought slip fit to be glued into the pvc. You have barbed fittings? Good point about the re-usability factor. Personally I sleep better with everything glued but yeah you are committed then.

I also needed 2", 1.5" and 1". This also made it tougher to find anything local.

Mine is 1" ribbed and coupled together with PVC and a clamp for added insurance. The fish store I go to uses this on all their tanks with no problem. But like I said earlier, you really need to muscle the 2 pieces together. Looks and works great though.

The stuff you have I'm pretty sure is a lot more 'bendy' than the slip fit. I had to heat mine up in really hot water to work with it.