ive been doing a lot of work on my tank today.my brother and i have held the light above the tank and realized that the bulbs dont over lap the braces as much as i first thort,there is absolutely no shadow or realy any restriction because the closeness of each of the 4 bulbs make up for it.i left the lights on for at least 45 minutes sitting directly on top of the tankand the braces were not too hot to touch...but still wouldnt do that over a whole day of lighting!!!...i thank you all for your help,i have learnt another lesson that i will probably never forget!!! thanks for the pic nicolec...my next tankwill be a euro braced tank for sure!!!!