I just want to get me feet wet and understand what kind of costs I will be getting into. I now know (from reading other's posts) not to trust folks from Petco or Petsmart for aquarium needs. The guy there said I could have 2 platies in this tank and no heater. Oh well.. I will be watching these two (I did sex them myself since the guy at the store said there is no way of finding out..).
I will probably get a 10 gallon with all the 'fixings' so I can have a thriving tank.
Thanks for the welcome and please be honest... that is the only way I will learn!
If you get your feet wet, you've definitely been badly advised
Seriously, though, if the shop assistant said there's no way of sexing a platy, then that indicates the level of expertise this person has - they are about as easy as it gets. Did you end up with a pair, or two of a kind? If you got a pair, then expect lots of little platies in about a month.
General advice on a bigger tank is to get the biggest you have room for - that way there's more water to dilute any errors that occur.