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#2
12-10-2001, 12:42 AM
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What a difference a new bulb makes.
Hey Darren,
How do you know when the bulbs need to be changed. Can you check them with a light meter or something?? (sorry for the duh question). I don't even know how old mine are. I never thought to ask. I am having a horrible diatom bloom right now. Arggh. I hope it isn't the damn bulbs!! Christy [img]images/smiles/icon_smile.gif[/img] 
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