Mason jar fan for desiccant

So I discovered that having desiccant by itself in a closed box really didn't remove the moisture very well because there was no air circulation so I created this to force the air to the dessicant. I have mine connected to a small wall wart and find that plugging it in for a couple hours drops the humidity to about 25%. Once the moisture is removed, it can be unplugged and if you have a good box should stay indefinitely. I have the fan blowing down into the desiccant. I've noticed that the f