I like what you are saying,I agree they are almost new halide fixtures, so I want to get new bulbs and supplement with my LEDs until I figure out what I need exactly,I may spring for some Ushios until then.The ecoexotics I have now are some pretty nice lights but I don't think they have the horsepower so to speak by their self,but with the metal halides I can get good light and use the ecoexotics to come on first and last and enjoy the blue effect.Now let me tell you about my fish,I have in my 75 a Yellow Tang,black occie clown,klauwitz Blenny,blue spot jawfish and two yasha gobys.The 300 gallon came with a yellow tang,purple tang,occie clown pair,scooter blenny,and diamond goby. Now I didn't have anywhere to put the fish but in my tank.The LFS told me three tangs might be ok,well not in my 75 because my tang owns that tank he immediately went on the war path, needless to say it wasn't pretty so I rescued the yellow tang to the sump well then he went after the purple tang so I finally caught him and put him in the sump too,wow was my tang vicious, I mean grabbing fins and pulling and tugging. I hope I can put them all 3 in the 300 at the same time and things wil be ok? Any input on that? Also the diamond goby has plowed my sand bed up like a bulldozer so I don't think he's going in the 300. The male clown of the pair seems to hassle my black clown a lot but I don't think it's life or death, I know it's too many fish for the 75 but it has to do until I get the 300 going. I just do more water changes.It was not pretty watching my tang go on the war path. He is Mr Attitude for sure.