Damn...hope I didn't start something, don't wanna hyjack this dude's thread. Thanks for the defence Miles, I honestly thought that an African/American mix was a bad idea...again, more because of food then because of water. I would however never do it anyway. I like to biotope when I can...at least with cichlids. I don't think Africans and oscars look good together. As for the water bit...makes a lot of sense...and I actually figured that it should not matter because the LFS water was not kept to the right specifications but I know a lot of die hard African keepers to would strangle me if I kept certain Africans in low pH soft water and fed them Hikari staple as opposed to Hikari Excel.
BUT.. since when are Oscars considered American cichlids?