I stumbled upon this site base in Hongkong. Amaze by the DIY'er skill in making a topnotch Cone Skimmer the likes of ATB and/or Bubble King. A supermoderator of the said site; QQ > his username posted this DIY in July 26 2009.
I don't understand mandarin so i'll just post the pictures he posted.
And now the best part of QQ DIY; molding the cone body from a flat acrylic panel.
the acrylic sheet:
yes. I think it's a vase too. here's how he did it.
1.make the pattern.
3.MOLD with a heat gun.
this is what you'll end -up
Now for the Neck
The Bubble Diffuser
The Collection Cup
The FULL Assembly
I was blowned with the over-all looks of his DIY. NOT a DIY-look for me it seems. Anyway, QQ has more of his test on this build but since I don't understand mandarin and i have no access to the forum I could not tell you how it is performance wise. What I understand scanning on his thread is that the maxi-jet pump is not powerful enough to get a goo skimmate instead he had it running with Aquabee and experimenting with Eheim too.