Quote Originally Posted by bondo View Post
So data should not be based on averages? what should it be based on? This is the average for Bangui.

Bangui, Central African Republic

The warm season lasts from January 23 to March 18 with an average daily high temperature above 93°F. The hottest day of the year is February 9, with an average high of 94°F and low of 69°F.

The cold season lasts from June 20 to August 27 with an average daily high temperature below 87°F. The coldest day of the year is January 3, with an average low of 65°F and high of 91°F.

The hottest day average low is 69 and the coldest is 65. That would put the average low for the entire year at 67. Yaoundé, Cameroon average low for the year is 68. The average low for the year in Khartoum, Sudan is 73.5. The average low for the entire year in Tambacounda, Senegal is 72.5. I know what you are going to say. Well those are the low averages you need to average them with the highs. That would be true if they only came out during dusk or dawn only. If they go out at night though the lows are what to look at. It gets in the 90s and 100s during the days in some of these places but they stay put under the ground in these temps for the most part.

I do understand humidity. Your argument though is based on how humidity works in general. We are talking about a tank. When the humidity in the air is less then what you are trying to maintain it isn't so cut and dry. How much water surface is in the tank? How much misting is going on? Is the top covered fully, partially, or nothing at all. You can't debate something without all the info.
You are still talking about the average of the lowest temperatures an the highest temperatures. This is not realistic, only looking at the maximums. You are saying the extremes are what you should be looking at not the averages of the whole day. Lets look at this, for the warm season if we take the average of the daily maximum temperatures recorded, 94ºF and the average of the lowest temperatures recorded 69ºF 94+69=163 /2 = 81.5. This is not a true daily temp average but is likely close. Better than saying the average of the coldest temps recorded is correct.

Are you also suggesting a 91ºF ambient is acceptable as well?

You need to look at the daily temperature average not the average of the daily extremes.


Humidity is hardly cut and dried. You stated it is harder to keep humidity if the ambient are temp is higher. This is not correct it is easier, you need less RH because the saturation value is different. This does not ever change in a tank, house or outside. It is a law of physics. The cooler the enclosure the harder the humidity issues are.

If you did keep a royal at 64ºF you could never get enough humidity as 100%RH fully saturated air is less than the amount of water in the air that has demonstrated over and over to produce good sheds. 60%RH only works at one temperature 80ºF as the ambient changes so does the needed RH. The cooler it is the more you need the closer you get to 100% the harder it is to hold. Warmer air temps need lower % of the saturation point and it is easier to maintain.

Warmth evaporates more water. Cool temperatures evaporates less. Basic physics, you have suggested this is not true.