looking good! One suggestion I would add is to cover the soil with leaf litter. neherp sales it and they have the best shipping prices I have found. It will help keep your frog clean should it ever venture to the ground. The leaves will also decompose over time and provide nutrients to the soil. You could also look at adding some Springtails to the soil. They will eat the decaying plants and leafs. They will also eat the frog poop and turn all of it into nutrients for the plants. I have even seen my Springtails in the water. I think they like the bacteria in the water as well.. not really sure why they seem to flock to it.

What type of wood is that on the land side? It looks like a piece of Grapevine.

I only ask because if it is Grapevine it will quickly rot in a humid tank and will start to grow a very dangerous grey mold (the mold will make your frog sick).