hi mike one of the causes for ther high temp will be your fan blowing on the bulb then despersing more heat around your space.try and get your exaust drawing the hot air away from the bulb and out of your box you should then see a drop in the temp. nice set up and watch those babys go in the last 2 weeks white widow puts most of her bud size on in the last few weeks nice set up . be safe the postamn