this is a good site. gives times and a parts list.

Here is a link that might be useful: mist prop

You can buy a couple of Dramm Misting stix from a nursery supply and get a 24 volt selinoid to turn the water on and off.
You will need a 24 hour timer and a 10 minute timer.
I set mine to start misting at 08:00am and quit at 08:00pm.
the 10 minute timer kicks in and mist for 12 seconds every 10 minutes
cost will vary depending on your timers