Right now I only got 2 250 halides and 320 pc 03's, I'm waiting on another bulb so I can put the 3rd 250 on it. I just transfered all my livestock from a125 to the 180 and the tank is a little taller than the last one. I wasn't sure if it was from to much or not enough. It's currently at the middle so I'll move it up and see how it does. Thanks!!!