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post #1 of (permalink) Old 01-24-2013, 06:13 PM Thread Starter
Algae Grower
Join Date: Jun 2011
Location: UK
Posts: 25
Question Glass sliders

I am hoping this is not a stupid question....

Glass can block certain rays from the sun so I was thinking about my tank. It has glass sliders on on end, so would this block any rays from my lights causing my plants to receive less light than if the slider was not present???
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