Another thought just came to me. When I was re doing the cuke box the lower I got in the container the more moisture was present the lower I got. Probably why the top dries out quicker, water runs downhill.
Any how this thought came to me. When I do and redo the other containers with the mix ratio I choose I will add wicks to the container. They could be cotton terry cloth towels cut into strips. Put one end in the bottom and extend it to the top when I fill the containers. Figure out how many per container. When the top mix starts losing moisture the wick will pull moisture up to the drier mix on top.
If I notice the wicks starting to rot away I could take a small steel rod and push in new wicks to the bottom.
I do not want to take all the credit for my thoughts here. My space alien"I" has been giving me some direction on this.