Quote Originally Posted by ViperJr View Post
Having two identical setups, where the only difference is that one is warmer than the other (even if it's not heated by a lamp, just ambiently warmer), the warmer setup will read a lower value on a hygrometer, since relative humidity just measures what percentages of water vapor that is present, in regards to how much water vapor that it can hold as maximum at that temperature). That means that heat does not necessarily always "burns" humidity way, but instead increases the highest amount of water that can be hold, and therefore lowers the percentages shown on a hygrometer. That being said, heat can of course cause a dryer environment and reduce the humidity readings that way as well (actually reducing the water vapor levels). Unfortunately, I do not how much difference actual visible light affects the drying-out process.

I'm sorry, this is hard to explain for me in English. And it's not getting easier when it's 01:30 in the night, and I've worked the entire day...

lol Your English is just fine !
Good night , Martin !!!!
Go to bed !!