Product review (3 stars): Overcoming Hydra-LG problems
To help any of you to overcome the same problem I had when first using my Hydra, I will share the following: I own a 16 cubic ft tower humidor. The Hydra was not maintaining the RH at my desired 68-72% range. After the unit struggled, ran out of distilled water way to frequently + caused the alarm to go off (even 1-2 days after refilling), I called the company where I bought the unit from, believing that it was defective. They emailed me instructions that I copied + pasted as follows.

Please note that additional seasoning is needed in cooler temperatures. The cold weather dries out the humidity, therefore wiping down your humidor with a damp sponge or cloth will allow the cedar to hold in some moisture, so that the humidity flows evenly within the humidor. Please try wiping down once a day each day for a week. You will see the Hydras humidity move. Also please note you can adjust the hydra to read the same as your digitals, by clicking the knob then pressing reset.

I followed their directions by using a cloth dipped in distilled water. I wiped all the areas I could possibly get to: Side + back walls, top + bottom of shelves, inside + outsides of trays, dividers, door frame, etc. This process done properly, took me a good hour each day. When you consider the amount of $$$ we have invested in our fine puro's, It's well worth the time spent. Fill your Hydra (or other brand) humidifier at the same time as well. And don't worry about the door being open for 1 hour. As you finish the task, shut the door + start up the unit, it will be close to registering to the mid 60% range already, from all the walls being moist from the distilled water + giving off immediate humidity. You will notice the RH to reach your desired % much more easier once you shut the door.

This process is really called "seasoning" the humidor. Although I seasoned it the way the manufacturer recommended, it was not sufficient. Add to that the excessive dryness of a very cold winter (NJ) and me having a forced hot air heating system, it was no wonder the unit struggled. Now, every 1 1/2 or so weeks, I do the process (for only 1 day) of wiping it down again. Kiln dried cedar is VERY dry when a unit is shipped to you. The wood will have a mind of it's own + draw the needed moisture right out of your cigars! Give it a try, I think you will be as pleased with the results as I have been. And BTW......many of you are correct that the unit is expensive, for a plastic case that has a few electronics + about $1.00 worth of wet floral foam. Be that as it may, at least you can get it to work better for you and properly maintain your cherished supply of  fine smokes. Let me know through here if you gave it a try + what your results were. Good luck + good smokin!