I'll say it, you don't know what you are doing. You will not have long term success keeping discus with oscars and texas cichlids. You can claim that they do fine all you want but the simple fact is the discus are not going to thrive with other large agressive fish or the waste that the large fish put out.
Dude, thats what im talking about...How come you know it wont work? Have you tryed before? I have seen it before...Discus and pikes, discus and arowana, discus and oscars..I decided to give it a shot. My fish might be agressive, but they are not agressive toward the discus. The waste will depend on filtration so since you dont know what kind of filtration I have, you cant say the waste will kill them. Most of the MYTHS about discus come from keeping WILD discus. Those are difficult and very sensitive...Discus and oscars are native fish here so I KNOW what Im talking about. Thanks for the compliments, though...