I'm having trouble keeping the humidity in my tank where I want it. It sits at about 30 which is way too low. I have tried multiple misting's a day and with in a few hours is right back at 30. I recently started trying tin foil over the tank lid but it doesn't work as well as I was hoping. I've only had my ball for for 3 months and her health had improved a lot since I've been taking care of her but I'd like her to have ideal conditions if I can. Any suggestions or advice to regulate (mostly rise) the humidity in a 75gal tank?