Well, as I said, those photos were outdated almost by the end of the same day I took them. The inclusion of the water filter/pump and heater render frog's tank a opaque cube of humidity which I can barely see inside of because of the condensation. The 29 also now has a nice big branch spanning the length of the tank that he can climb onto.
He has been snoozing on the leaf of a plant all day. The little submersible heater is, I think, proving to be insufficient to warm the entire tank - probably because there is so little water that heating the water does little to raise the overall ambient temperature. I'm guessing the low temperature is why he is so inactive, because he certainly perks up when I'm holding him. Back to the drawing board to figure out the heating solution.
The smaller tank is re-spray-foamed and now securely siliconed. It should have cured enough by tonight [Wednesday] that I can safely throw in the hydroballs and some substrate, then fill the little pond and transfer the pump and heater over. Hopefully, the smaller tank will heat more evenly -
b