hi guys, you may have read my thread about getting my first spider? i have done lots of research and have nearly finished setting up my vivarium, basically, its a glass viv 30cm square with about 6 inches of substrate of peat which i got from the spider shop online, a small water dish with gravel in to make it shallower and ive made a really attractive 'den' from half a plant pot with moss round it, the thing is, the heat mat they provided me with isnt heating the viv up at all and the substrate is still damp from mixing, any ideas?