I just got 2 Tarantulas for a present about 3 days ago.
These were a complete surprise so i had nothing to cage them in. So, I ended up housing my A. Avicularia in a old 5 gallon tank turned on it's side, and i housed the G. Rosea in a mid-sized critter keeper. in my A.Avicularia enclosure i had to tape in the back of a dvd case to keep the eco earth and a pet store tree branch in, and had to tape up a whole in the lid that i am using as a door,and have been trying to keep the humidity in the 75-90 range; then with the G.Rosea i just put a hide(half of an old piece of tuperware) and a bottle cap with water in the critter keeper.
will this be fine for now?
oh, and can you leave some recommendations for tanks to upgrade them too?
P.S. The A.Avicularia is about 2.5" and the G.Rosea is about 3".