i had one lone cory for a while and he was fine (until he got killed by one of my fish

) i think it would be ok just to have one cory....but i am certainly no professional....i really dont know about the neons though.....i know what you mean about wanting good news.....when i first got here my fish were dying and all some people would tell me is "you shouldnt have those fish together" or "the pleco will get too big for that tank" you got to get used to it, though.... [schild=18 fontcolor=0000FF shadowcolor=C0C0C0 shieldshadow=1]live and learn![/schild]