I didn't say that discus can ever get to 12" at all, they don't the largest are 10" as I stated, what I did say was that they GENERALLY can get to 8". Yes they can be kept in a 20 gal as adults, but ONLY for breeding purposes. You sir are an arrogant jerk. Just because I do not have a tank larger than a 75 right does not mean I know nothing about large tanks. If you know nothing about discus then you have no right saying that they can get to 12". I do know things about knifefish, and I never said anywhere that you should keep them as you do discus. Now who were you saying had a problem reading? You keep assuming that I don't have expirience, but who are you to say that I don't? You have no right attacking me and what I have done. Sure I haven't done everything, but I've done a lot more than you assume I have. I am not the typical LFS employee either, notice I said that I did work there, I don't anymore because I couldn't stand it. Oh but wait, if I am a typical LFS employee then must be I could not have bred discus, rams, farlowella, scarlet badis....etc, but I don't have the expirience so excuse me about that. Knifefish simply are not my cup of tea, so why would I care how big ones that I have seen are. Bashing your forum, no, Just why would I want to go there when its moderated by someone like you? Arrogance abound. You can not differenciate between size fish can attain in the wild and in the tank, why because simply if given proper care they will get to their fullest potential size in an aquarium. Just because they are in an aquarium doesn't mean they limit their size, no fish does that, not even your little buddies the browns. Large tanks....they are just simply much much much easier to maintain and keep a healthy environment than smaller tanks. When something goes wrong you have much more time to react, if you even have to do anything. Oh but wait, that makes the point that larger tanks are better for fish regaurdless of their max potential size.....kinda contradicts what your saying huh? Just like a lot of other things. So please go crawl back to your forum where you can play god and belittle everyone using abhorent language, insults, and personal attacks because we don't need it or you here.
Hope you enjoyed your stay

Stick to your little serptentine buddies that don't need big tanks though (well at least according to you) .