I finally dug up some of the information about the living moss substrate I mentioned earlier this year.

I still do not know for sure what type of moss it is but it might be related to sphagnum(doesn't look like it to me but someone said they thought it was).

The place I found carrying it is not the same source asa I first came across it through. The Bean Farm carries the living moss substrate and the food layer material for the moss and they are a sponsor of the cornsnake forum so hopefully no one will care if I post the link here
http://www.beanfarm.com/store/agora.cgi?cart_id=5994043.25575*DS32O1&product=Bedding and Cage&user4=Moss

I would refference the source from the people who introduced me to living moss substrate but I cannot find their website/contact info.

From what I was told by a breeder they used this substrate for a breeding pair of BRB to great success.

The moisture from the moss kept the humidity levels up.

The only maintenance they mentioned was picking up individual moss clumps to rinse them off when the snakes defecated on them. And of course watering/misting but I do not remember how often that was.

It also never needed to be replaced. You probably do have to add more to the moss food layer under the moss every so often but I would be surprised if it was more then once a year.

I am by no means trying to push this as a substrate but merely trying to relate as much of the information as possible that was requested when I first mentioned the substrate earlier on the forum. It is a gorgeous substrate for those wanting to try for a more tropical feel and have often seen it used for specialty tropical frogs. However it is extremely expensive up front, even though virtually no maintenance cost, if you are installing it into large setups.

Hope this is helpfull

Sean.