HI. i just wonder if i shall upgrade from my 250w hps to 400w. im growing in a DS60, but i have modified it a little so its bigger than a normal ds60, i have build things pushing out the tent walls about 10cm either side so its almost abit oval shaped. a normal ds60 would measure 60x60x140 but mine is prob measuring 80x60x140 so i also have a 6" cooltube in there that would not fit i a normal ds60 . its all working good with no problem with my 250w hps.. i have the cooltube attached to a inline fan in the loft about 1.5 m above the tent via duct. i think its a mix flo 187-280m3 . the tent is located inside a wardrobe. my question is, could i run a 400w in there?