I have been using the white stuff so far, but I have now (almost) switched to some diamond patterned reflective stuff....it's the nuts! I haven't put it up properly yet cos I am waiting until I change the res and have to take everything out of there anyway.
Tmarin, it's not just about getting the right temps....you need an exchange of air. Don't suppose there is a vent in the wall is there?
What's the Relative Humidity?
I'm having some issues with ventilation right now and it's a pain in the ass, I hope it's easier in your climate.
(Hey thanks for the rep

)