Im probably just gonna play it by ear,Im pretty sure Im not going too far wrong with what Im doing.... As for reducing the light thats not an option as I dont have another,I can however move it up a couple of feet but even then its only a 2m hight tent so I dont have that much to play with. Also my uncle is having a few similar probs with a tent and a 400wtt(same clone source)Im gonna put this down to a shit clone source (clones were weak and starting to flower)and maybe a furry res lol. Will keep you updated dude. RM.