Thanks for the feedback Kurt, I'm going to now re-think the setup for the reed frogs. Originally my idea was to put them in a tall hexagon fish tank with 1/3 water and various plants in ceramic pots. I was going to use a small fish tank heater to warm the water in winter months to around 20C. What would you recommend?

I kept a similar tree species from Kwa-Zulu Natal and because I couldn't get the temps higher than 23 C they all died off so that is why I am thinking of keeping the temps higher with humidity.