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photo of Shirlie Sharpe

Shirlie's Freshwater Aquariums Blog

By Shirlie Sharpe, About.com Guide to Freshwater Aquariums since 1998

Aquarium Photoperiod

Friday November 21, 2008
Aquarium lights usually don't come with a tag saying when to turn them on and off. So, how long should aquarium lights be left on? Here's simple advice, and tips for making it easy to maintain the desired photoperiod.

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