Quote Originally Posted by NialR35 View Post
...-Eventually, I want to get the Exo-terra medium-low which is 24x18x12, will this be good for when my pyxie is an adult or a 20gal would be better (IF i end up getting a male)?
Would wait until you know sex to get a larger tank. A 20L might be all you need for a smaller female; but a male will need anywhere from a 40B to a 75G if huge.

-I own the Exo-terra small-low (18x18x12)...this should be good enough for when my ornate becomes an adult EVEN if it turns out to be a female right? ...
Yes, that will do even for an Ornate female.

-So just to double check, the pyxie does not need to be submerged/floating in water (as some youtube videos I've seen showing off their set ups); water to the chin is fine and there's no need for a "pool" right?
It won't "need it" but if you do a 50-50 set up (or even 1/3 land 2/3 water) frog will happily use a swimming depth water (water height around frog's SVL). Just make sure dry section access is easy and maybe provide a rock slab or similar on water section for frog to leave water and chill out.
Hope this helps, good luck !