Thanks for your input but I am 100% sure that the one frog I do have is a African dwarf frog.
I have had this little girl for over a year now.
I originally had a a pair but one became ill while I was away and my wife doesn't
really know how to tell if it is sick or not unless it is painfully obvious and by then it is too late
to do anything.
She knew enough to remove it from the tank thankfully.

So I have no doubt that she can feed and do basic care for the new setup of purely
the ADF's.
I plan on having a sand substrate with live plants. I think that the frogs will enjoy it.

I just need to get another canister filter and a lighted hood for the 20g long.
Maybe with 5 of them I might get some babies.