nolapete;3987823; said:
CJH, is hardly not giving advice to use it.
I'm not getting defensive at all, but I'm not going to sit here and let someone propagate bad information either.
And I asked for an example of where I recommended extruded acrylic, not extruded polycarbonate.
You seem to be comparing the two based on whether they are extruded or cast. What I'm trying to get across is that nowadays there is so much variety in domestic vs. imported clear plastic sheets that we can no longer make discrete categories such as "cast is always better than extruded".
When it comes to acrylic vs. polycarbonate we have to compare the two materials for what they are and not necessarily how they are made.
If you want to make the point that extruded acrylic (whether foreign or domestic) is not sufficent for aquaria building then I agree. But if you then want to carry that onto say that any extruded material is bad because extruded acrylic is bad, well then I disagree and would say that is propogating bad information.
But ultimately we agree on a couple of points: domestic acrylic is better than most any import and if comparing chemically similar plastics from the same manufacturer cell cast is better than extruded.
Personally I think polycarbonate, whether cast or extruded, is a poor choice for aquaria. It's more flexible, hard to polish, has relatively poor optical qualities and is more senstive to UV rays. But if given access to free sheets I'd sure as heck give some hard thought about using it.