Trapper, I have been trying to find that out for ages. Many have & they say its not as good as on HQI or electronic.
But I would like to know, when run on a normal ballast, what it compares with. Is it brighter than my 400 watt 12K, or does the normal ballast make it similar in appearance to the 12K?



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i have a 20k-10k-20k setup. the outside radiums are running off


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