Put a digital hygrometer in there, and you'll know almost right away how much it affects humidity. If you aren't measuring it (I don't see one in your pics), then how do you even know a change is needed?
im getting a hygrometer the weekend because it broke and the thermometer is very inaccurate im from the uk and trying to find a cheap digital hygrometer and theremometer but cant find one
Until one has loved an animal a part of one's soul remains unawakened.