Share 'Controlling Relative Humidity when Polishing Panned Chocolate'

To get a good lustre on panned products I need to attain a Relative Humidity of aroung 45% and a temperature of around 17 degrees C. However the two seem to contradict each other - the lower the temperature the harder it is to reduvce the R/H. What are others doing to achieve this? I have two dehumdifiers and they battle at the lower temperatures, cycling in and out of de-ice mode for 20 minutes…