The 2" would be great, but I don't know about taking over my entire tank part. I was planning on using a substrate divider, but the only ones I could find on a quick google search were over in the UK through the green machine online. I'm still leaning towards the marsilea. So far it has everything I'm looking for besides the months it will take to fill in. But waiting for that isn't that bad, I've been waiting for the tank I just got for about a year now. Thanks for all your help so far somewhat.
We don't inherit this world from our parents, we borrow it from our children.