Neon green spot on Whites Tree Frogs head.

[flybyferns]

Keep a very close eye on him.
The stress during the adjustment to a new enclosure predisposes them to opportunistic illnesses
when their 'resistance' is down.
Have a herp vet on-hand!
Cover three sides of this tank and keep things as quite as possible.

Sometimes during color changes there are spots that appear temporarily

Post a photo if possible , please

"sleep under the moss in his tank"
1) a whites sleeping under the moss is likely an indication the humidity is too low despite this species can tolerate variables
**** be sure he has a clean, shallow water dish ( to soak) ( water to his chin ) filled w de-chlorinated water ( change it daily when he is asleep ... so he is not disturbed )
2) ???moss??? what moss ??? If you have sphagnum moss in the frog's enclosure ( as many big box pet chains do ) remove it asap as it can cause intestinal blockage if ingested accidently

3) be sure he is warm enough !

Plain white paper towel can be used for substrate / dampened w de-chlorinated water temporarily or permanently

[Eterna]

Keep a very close eye on him.
The stress during the adjustment to a new enclosure predisposes them to opportunistic illnesses
when their 'resistance' is down.
Have a herp vet on-hand!
Cover three sides of this tank and keep things as quite as possible.

Sometimes during color changes there are spots that appear temporarily

Post a photo if possible , please

"sleep under the moss in his tank"
1) a whites sleeping under the moss is likely an indication the humidity is too low despite this species can tolerate variables
**** be sure he has a clean, shallow water dish ( to soak) ( water to his chin ) filled w de-chlorinated water ( change it daily when he is asleep ... so he is not disturbed )
2) ???moss??? what moss ??? If you have sphagnum moss in the frog's enclosure ( as many big box pet chains do ) remove it asap as it can cause intestinal blockage if ingested accidently

3) be sure he is warm enough !

Plain white paper towel can be used for substrate / dampened w de-chlorinated water temporarily or permanently

I'll get a picture of him tonight when he comes out.

As for the humidity I suppose my dial could be wrong, I'm using one of those crappy exo terra compass looking ones. But I feel almost like humidity may be too high as today I woke up and had to clean white fuzz from some of the decorations.

He does have a rather large bowl in his tank and I can tell he is using it because in the morning before I change it I can see some of the substrate in it.

As for the moss, I know it can cause impaction if accidentally ingested but he is only fed with feeder tongs so I just assumed it wouldn't be an issue? I may just switch it out anyways because the only reason I was using it as for extra humidity.

Also a few follow up questions:

Could he be hiding under the moss because he doesn't feel secure enough in the plants I have in his tank? Would it be worth purchasing a hide that sticks higher up in the tank?

Are there visual signs I could look for to judge is humidity is correct until I am able to purchase a digital hygrometer?

Thank you very much for the advice!