DIY grow tube suggestions

Thinking of making a DIY grow tube for a 400w to save some cash instead of spending like $150-200 on something I can make myself... (Or at least try to make) xD

Thinking of ordering something like this
http://www.save-on-crafts.com/hurcanshad14.html
or
http://www.save-on-crafts.com/longvase.html - but I can't figure out if it has a top on it... I think it does? but i think its too long..

I've got a grow shade and everything else just need a grow tube and some fans..

Thanks for your time and any suggestions you can give me...

Do you mean something like this:
https://www.rollitup.org/do-yourself/279224-diy-cool-tube.html

Found that link in the DIY section.........Cheers,

Yeap, that's basically what I'm aiming for..

Thanks man... Any other DIY's out there?