if the fixture you are referring to is the outer orbit, i have the 48 inch 2x150 watt mh and 2x130 watt pc actinic and i love it, also the 6 moon lights give it a real night time effect, while still allowing you to veiw the tank when the lights are out. it is def better than the set up i had before (4x96 wattt pc) i paid only 385 for my orbit though on the auction sight, plus 45 dollars to ship. check out the auction site see if you can find it cheaper thats what i did. and the ballasts are intergrated into the light fixture so all you have are cords from the back. it makes it really nice, plus it comes with 2 timers and the little feet to put it on top of your tank, or the hanging brackets so you can hang it from the ceiling, the fixture gets a little warm, but only raises my temp about 1 degree total OVERALL 5 STARS
