You have to drill holes for things like temp and humidity probes if you want a clean look.

For the mister, it has rubber tubing. It has one that comes off the mister and then Ts into two separate hoses with sprayer nozzles on the ends. I drilled two holes right under the shelf just the size of the tubing, disconnected the nozzles and feed the hose through and reconnected the nozzles. It's hard to even see them under the shelf but it looks like they are just attached to the back wall. All the hose is hidden in back.

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