Tree Frog Bioactive terrarium questions

[Royalty]

Mostly want to know if Isopods are good to add or not and if so what species to look for/avoid.

Any plants to avoid as well that could be potentially toxic to tree frogs?

For a water feature should I avoid anything too large?

I did recently acquire a rather neglected tree frog and I want to prepare a new and better environment for it to thrive in.

 

[Dandrobates]

Can you provide a bit more information? What species are we talking about, what size / setup is the current enclosure, how long has it been in your care, have you kept frogs before etc.