Chkadii yes point in fact two identical tanks one with higher ambient air temps will be far easier to hold 15.5 gm/m2 absolute humidity.
At an ambient air temp of 72ºF you need to hold close to 80% RH to be equal humidity as 80ºF 60%. If the air is 84ºF you would only need close to 50% RH to be the same as 80ºF @ 60% RH. I agree that there are many factors but the amount you need is a huge part. (BTW the dew point for all three is the same 65ºF what I am pointing out is related directly to dew point. Many just calculate dew point combinations. basically I am simplifying it)
This is the statement I commented on, lights don't actually dry out tanks there is no magic 4th state of water and glass has a very low water absorption. lights change the air flow patterns but your statement is basically flawed.Originally Posted by bondo
I still see no correlation in using the lowest recorded temps and temperature recommendations. Especially in light of the status changing among biologists to reclassify Royals as crepuscular (yes there is still debate but it is starting). Averaging the coldest temps recorded each day is simply silly, it is likely only represents 20-50 hours of a month. Using an evening morning averages is likely to be closer, and discard the lowest and highest temperatures.
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