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90 Degree optics 20" High tank


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Milad LEDGroupBuy.com
Quick question: will 90 Degree optics be adequate for a 20" high tank? should I go with 60 Degree?


depends on how high above the tank the 90 are.

If they are under 6in then you should be fine, higher than 6in you should start looking at 60s.

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