Johnny_NaCl Posted September 29, 2010 Share Posted September 29, 2010 what is the difference bewteen hqi and an electronic ballast? Quote Link to comment Share on other sites More sharing options...
grassi Posted September 30, 2010 Share Posted September 30, 2010 I've found this article really useful when I was trying to understand it: http://reefkeeping.com/issues/2007-03/sj/index.php Hope this helps Quote Link to comment Share on other sites More sharing options...
Johnny_NaCl Posted September 30, 2010 Author Share Posted September 30, 2010 I've found this article really useful when I was trying to understand it: http://reefkeeping.com/issues/2007-03/sj/index.php Hope this helps thanks grassi! Quote Link to comment Share on other sites More sharing options...
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