Is water circulation really necessary

[Mentat]

Your "reverse overflow" idea is interesting. However; unless this vivariums is huge, your actual water volume will be small. Since the heater has to be matched to the actual water volume, a malfunctioning overpowered heater could literally boil the water if the thermostat get's stuck in the on cycle. So if you decide on the heater, please make sure it's matched to the actual water volume and if possible, connected to a GFI type outlet .

[phran]

Thanks for the help guys. After an excessive amount of reading, I've decided to go the simpler route. I'll only be getting my frogs end of Mei (D.leuomellas, D.'azreus'' and D. auratus), but have already started putting together the vivs. this way I can see if hey work out before putting the frogs in them. I'll be posting pics of the build soon.

Again thanks for the imput guys, really appreciate it