You just need new sanding belts and or a 30" disc sander :D

Worked fine for me, think you had a beer too many

http://tapatalk.imageshack.com/v2/14...7b7109f5be.jpg

So the only modifications I can see that would help so far are a slightly larger extraction tube, better airstone (like the one mike31154 made) and a quieter air pump (mine is broken and jerry rigged together so it's noisy)

Currently I don't have a nano tank but there may be one in the future. Some time ago while researching skimmers I came across a product from Japan that is made of glass.

http://mame-design.shop-pro.jp/?pid=6515458

There are some reviews on the reefbuilders site. There was(is) also an outfit called Gnome that produced something similar, but some folks got scammed & it seems the business never really got off the ground.

Just throwing this out there for anyone that may be interested in a non-DIY skimmer for their nano that is a little work of art & will look good, not use up a lot of space. And it may help your DIY effort by giving you some ideas.