Quote Originally Posted by triskal View Post
My fother brought us a gray greefrog from northern WI for which my soms promptly setup a little habitat in a 10 gallong aquarium which has been used for a number of critters over the years. It seems to be doing OK. It has eaten some crickets from the pet store though this morning it appeared to be dead but has since perked back up.
Appeared to be dead how? Was it just not moving, or was it on it's back or something?

Quote Originally Posted by triskal View Post
I would like to setup a simple vivarium for it and have a question about the substrate and plants. I have read the the excellent article here a couple times. I don't want to spend a fortune and am glad to find that gray treefrogs are pretty hardy and since they are from northern climates I don't have to worry about maintaining a tropical temperature.
The temperature requirement for grey tree frogs is one of their many benefits. They are also very tolerant to humidity levels being lower than what most frogs would need to be healthy.

Quote Originally Posted by triskal View Post
The article refers to additive-free soil. Where do you get that and how do you tell if it is additive free? I have some potting soil for plants but I think it has fertilizer mixed in so that is no good. Doesn't using soil become messy, especially when adding water?
You will want to go with natural organic soils. I personally use cocofiber mixed half and half with organic peat moss. The cocofiber you can buy in compressed bricks online or at the pet stores. The organic peat you can pick up at home depots in huge bales in the summer for like $6. It's an incredible deal. Sphagnum peat moss can be acidic and harmful to your frogs skin if used straight. Tree frogs really won't spend much time in the substrate unless you cool them during the winter, in which case they will burrow into it (most likely).

Quote Originally Posted by triskal View Post
I was also thinking about a brick of coconut husk but how do you use that? Do you wet the whole brick to let it expand and just pull out what you need or try to cut it first?
You can try to cut it, but I just expand mine in a plastic tub and then just keep the extras in it with the lid on. That way I can use it as I need it and not have to worry about expanding it every time I need some.

Quote Originally Posted by triskal View Post
Then it seems a lot of recommendations are to add moss to the top which I was planning on doing.
It doesn't matter either way. Your frogs will be less messy if there is something covering the soil, though. I personally like to use dead oak leaves to cover the bottom of my enclosures. Moss is fine, too, but watch your frogs during feedings to make sure they aren't eating a bunch of it with their crickets. It may be a good idea to bowl feed or tong feed if you are going to have moss in there. I personally enjoy tong feeding just because it makes me feel more personally involved with my frogs.

Quote Originally Posted by triskal View Post
Lastly for plants - I was thinking of using Pothos since it is readily available at the office and I could take a cutting to start a new plant. Do you generally plant it right in the substrate/soil? If so doesn't that make cleaning a pain with the roots into the substrate?
Pothos is an excellent choice. Bamboo, english ivy, nerve plant, umbrella plant, and arrowhead plants are also common and make great tank plants. You'll want to rinse the soil of out the roots of any plants you get your frogs, then replant it in your additive-free substrate back in its pot. After a week of misting the plant with distilled water it will probably be safe to put in your vivarium.

Quote Originally Posted by triskal View Post
Sorry for the newbie questions. I am excited to try this and share it with my kids I just need some guidence to get started.
No need to apologize, that's what the forum is for I would encourage you to use the search function. All of these questions have been answered before and I'm sure you'll find answers to questions you have in the future also.

Good luck!! We'd love to see some photos of your new frog and his enclosure when you've got it finished!