I just kinda came up with this off the top of me head, but I think it will work.

I do the same type of mister setup, but instead of having the water leaving and re-entering. I make it so the water never leaves the pod, by having a submersible pump connected to the pipe inlet at the bottom of the pod. That way the only thing I have to do is plug in the pump.

The only problem I can think of is if the 14 gal container won't hold the amount of water that I need, and have enough room for the misters to spray.

Lemme know what you think.