That's all I did. I am a complete newbie but read online when I got my humi last week. I wiped down the walls with a paper towel with distilled water, since I didn't have a sponge, added a pretty big vat of distilled water, my 70% RH tall humidipuck, and digital hygro. It went up to about 78% in this configuration, after like 20 hours. I removed the vat of water, and left the humidipuck charged and in overnight, woke up and it was at 74%. Put in my cigars and by that night it was at about 71%. The next day was at 70%, and now is at 68-69%, right where I want it. I'm still keeping an eye on it to make sure it stays at 68-69% and doesn't drop much lower.
I decided to wait three days for a steady reading. It hovered around 66-65% for the past 24hrs, so I took out the shot glass to see if the humi-puck can handle it on it's own and the RH jumped up to 64% fairly quickly. Far cry than the 56-57% readings I was getting. I will give it a day to see if it can remain at this level.
I am pretty sure I did not season it properly. User error.