cellowithgills Posted September 6, 2010 Share Posted September 6, 2010 I went to Jerry today and saw that they have MH bulbs and fixtures. 75w, 175w, and 200w were about $25. I asked them what the spectrum was and the 200w said 28k lumen and the 75w said 10,500 lumen. Would these work on a a tank? It seemed to good to be true so I thought I'd ask. Quote Link to comment Share on other sites More sharing options...
ReeFit Posted September 6, 2010 Share Posted September 6, 2010 lumens are the intensity of the lamp, spectrum is the color. a 28k spectrum is really blue and would probably not support life very well if you had any photosynthetic life. You would probably need to suppliment additional lighting with that bulb. 75watt with 10,500 lumens is probably more of a residential house lighting bulb sounds like to me, i wouldn't even touch that one. Quote Link to comment Share on other sites More sharing options...
cellowithgills Posted September 7, 2010 Author Share Posted September 7, 2010 I could get a spectrum on the 200w, I meant 28,000 lumen. So should I be looking for a 10k-20k bulb? Quote Link to comment Share on other sites More sharing options...
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