excellent test
i learned more in that short article about mh bulbs than i have in about two years of using those things i've been running a single 250 watt 10000K bulb on a 55 gal tank-it was givin' to me and had only been used for a couple of months. i only have the one because when i went to get another one, i wasn't expecting the higher price tag. so i tried putting it closer to the center of my tank. needless to say, this was not a good idea. check out my pics to see what these bad boys do to plastic. my 55 has become my sump after a little repairs.
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