A tank that high up will need light can penetrate deeper water. Go for bulbs that are 10,000
K which ever lighting system is recommended.
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https://www.tricitytropicals.com
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We, as a people, know so much more about outer space than we do about our own oceans. This lack of knowledge can very well spell the dangers that lay in wait for us.
The oceans surely would swallow us before a rock comes down to smite the planet of it's life.
Nov/2004