Two ADF for my tub?

[Mentat]

Not sure what you mean by tub? If a heavy duty plastic container that has never been used with chemicals (i.e. Rubbermaid Brute) it should be OK. Do make sure the container can hold water pressure, the last thing you want is 15 gallons of water in your floor. Also, starting with young smaller frogs could help keep their "mess" volume down .

[Elliriyanna]

Yeah its a rubbermaid that never has had chemicals. My axolotls are in it currently ... So its certainly safe, I just have stuff to move around lol. I only have it half filled but thats still more floor space than a standard 10 gallon.