hi sir blackalot
i aint got a clue what my humidity is to be honest , all i kno is its around standard room temperature ie :20celsius , i cudnt afford intake & outake fan kits so ive jus got to mek do with an oscilating fan for air control & leave the pockets open on my tent & i also bought my timer from my local hydro shop for £12 which is about $18-$20 , ive got 1 exactly the same running my water to feed & its still working fine but the one timing my light lasted about 4days ! I was goin to buy a relay but the guy at the hydro store said it wud only be a waste of money & that this suposed good quality timer would work fine seeming as im only using 1 light !! the thing thats getting me down is no matter what timer i buy or quality ov it , it only last about 4days which is nothing but a pain in a**e !!