Thats good info! Since i want to breed mantellas i am making sure they are in a species only set up. I dont want to end up with some lil hybrid monsters lol though the coloration combo would be interesting. So yea using a vertical setup would be good for my golden mantellas. Plus a vertical set up would be easier to keep cool. I think i am goin to have to move my mantella set ups into a cooler room for now though, we had to turn on the heater this week for winter and i noticed higher temp range in their tanks.