This carboy is the best of both worlds

[Gymrat]

http://www.homebrewersassociation.org/f ... .msg227070

You can see through it for those who like to perv, yet it is super easy to reach into and clean.

[russki]

I would not use these for fermenting - they are polycarbonate, and have high oxygen permeability. These are marked with #7 recycle code.

[Gymrat]

This I didn't know.

[russki]

This I didn't know.

The best plastic to ferment in is PET (#1) - it has almost no permeability, and it's clear. Unfortunately, it's flexible, and not suitable for buckets, but makes great plastic carboys. Here is a document that lists permeability for common types of plastic:http://www.faybutler.com/pdf_files/HowH ... ctGas3.pdf