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Originally Posted by phreezee
I use UV 24/7 and the greatest benefit is algae control. My experiment was to shut it off for a week and during my weekly maintenance I found I had to clean the glass considerably more than when I had it on.
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Don't use UV sterilizers, but don't have much of an algae problem on the glass of any of my three tanks, either. Must be the low bioload of each tank, weekly water changes and other maintenance, or other contributing factors.