Is a large tank too big for a Fireleg sling about 1 inch big?

[Yusuf]

I have a Mexican Fireleg sling about 1 inch big. I bought a fairly large fish tank (45cmx20cmx20cm) and it seems like the sling might be a bit overwhelmed by all the space. Most of the substrate is fairly flat with a few small hills, and I have put some fake plants in a corner and a toilet roll in the substrate for the sling to hide (although he hasn't even gone into it yet because he is walking around all the space in the tank). I would really appreciate some advice.
I ordered the Mexican Fireleg as mentioned above, but the shop delivered me a Mexican Red Rump as well, so I have decided to just keep it. So I just really need some advice about keeping tarantulas in general, as I have never kept spiders before.
Please look at the pictures for context.

 

[Yusuf]

Edit: I just realized a good solution to my problem would be to put a divider into my current tank, which would give me enough space for both my Fireleg and Red Rump. Does anyone have experience with divided tanks?

 

[Vanessa]

Yes, it is far too large. No, divided tanks are never a good option.
This is a great thread to look at for information for new people and provides a lot of useful links to spiderling care.

 

[EtienneN]

You can keep it in a 16 oz deli cup until it's about 2 inches or so. It's better to keep things cheap and simple. And as has been already stated above, divided tanks ALWAYS end up with one fat spider.

 

[Yusuf]

Okay, I think I have a better understanding of how to keep them now. I'll move them to a 16 oz cup till they're bigger, and I won't use a divided tank. Thanks for the replies, it really helps

 

[NukaMedia Exotics]

Waaaay to large for a 1" sling. A 1" sling shouldn't be in anything much bigger than a 16oz deli cup...

 

[viper69]

It isn’t too large if you have proper cover and provide with tons of insects to make sure it eats. Most people find the latter a pain though.