People suggest that they do extremely well in a dark area, and like to mate at night time.
In the "British Tarantula Society" Journal 22(1) 16-30 they have a field study of Cyriopagopus species , which could be of use.
"Although Cyriopagopus come from the wet tropics, you should not automatically assume that a hot, poorly ventilated, water-saturated environment is required. In fact such conditions would be detrimental over a long period of time. You need to consider that in the wild Cyriopagopus frequent holes in tree trunks (Pennell, 2001) (Plate 7), even though the external environment may be
scortchingly hot and dripping with moisture, the micro-environment within a tree hole will be dry under foot and somewhat cooler than external mid-day temperatures.
In captivity you should attempt to replicate these conditions, keeping the bamboo retreat dry and slightly cooler than the rest of the tank (this can be achieved by angling the bamboo retreat so that its base corresponds with a cooler section of your cabinet or under-tank heating system. As with Poecilotheria spp., Cyriopagopus are highly photophobic and you’ll need to ensure that the spider’s retreat is in total darkness. You are unlikely to see a settled Cyriopagopus during the daytime. Temperatures between 25–30°C are ideal."
Snippet from the article by Richard Gallon & Ray Gabriel
"Invasion of privacy" meet "freedom of speech"