considering on going to mh type . now using vho. have not heard of the iwasaki bulbs till now. do they use the same sockets as mh bulbs or somethng else entirely. has anyone used other 6,500 to 10,000 type bulbs such as a quartz or halogen type? isn't color temp the main thing? if I go to iwasaki bulbs, do I need a special retro kit made for them alone? I don't have the hard corals that need so much light and am just going to add one 6,500 - 10,000 bulb to my existing vho's. I have a 72 gal bow front with mostly low to mid light coral requirments. I've never seen a tank set up with mh till this weekend and the difference is "startling" to say the least. advice please?



