I just upgraded to MH on my Red Sea Max. I am now running a 250watt 14k MH. However, I was at my favorite LFS today and the guy was kind of taken back when I told him I was running 250 (when I said I updated to MH he assumed it was 150). He told me to be careful as it might be too much. What do you guys think? Is 250 overkill?? The is 20inches tall btw.