I am thinking about starting a 10 gallon tank. Im going to put a couple of gold apple snails in it. i was wondering if I could also put in 3 corydora catfish in with them. Would 3 corydoras and a couple of applesnails overstock the tank?? I dont want to overstock it. I also read that corydoras like to be put in groups, which is why I would get three. so is this setup ok??? Thanks for replying.