One of the trays filled.
Fill the trays as full as you can get them.
Another view of the trays filled. They were dry in about 6 hours.
I started them at night and put them on an automatic timer, so they would shut off in the middle of the night. This worked great. I usually turn them off until morning. I knew they wouldn't be dry if I turned them on when I got up and back off when I left for work and I didn't want to leave them until I got home. I will use the timer again.