i think one of the main problems as daft as it sounds is the price of oscars compared to a few years ago, they have now become affordable for everyone not to do to much research on keeping them, if people had to pay £50-60 etc they would certainly get more educated before buying.
I bought another two small ocars today and paid £26 for the pair, i know very soon i am going to need an another upgrade, but like most on here an prepared to do,
at least the wrong info' that woman was giving will hopefully see those O's on their own or with very few tank mates, but i wonder how many LFS sell O's to people and they end up in those bio style bowls