Originally Posted by T.G

Drymistat tubes and xikar gel are essentially exactly the same thing, humidity jello. They suck at absorbing excess moisture out of the air, they can do it, but they aren't very quick about it. They tend to do a bit better in larger spaces or humidors that leak a bit.

The acrylic jar humidors, especially the ones made like spring top canning jars, are airtight. Airtight + humidity jello is begging for overhumidification as you are experiencing.

My recommendation for the acrylic jar, because there is so little space in there, is a Boveda 65% 2-way pack. You could also go with a very small tube of beads, which are also 2-way humidifiers, from either HCMbeads.com or heartfelt.com, but, you will lose the space for one to two cigars by putting that tube in there.