And: the clear, UV has only a very slight effect.
If you do add a colored reagent to your water - such as GlowMotion - it won't be visible.
If you're absolutely sure about that then that'll be fine.
I can get clear tubing in the UK. However, it costs around 3 times what the AC stuff is, and I'd rather use the AC stuff.
I don't suppose you know of any pictures of the green glowmotion using AC tubing?