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Valid Concerns
Are the corals and fish in the oceans being affected adversely by the reef hobby?
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Limited Resources
Making a reef tank work is often about having enough money, but not always.
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Plants and Plant-Eating Fish
While there are certainly fish that will mow a planted tank right to the ground (silver dollars come to mind), there are many fish that will eat at least some greenery, but can be managed in a planted tank.
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Using Soil
The subject of soil substrates is a "muddy" one! There are a lot of different variations of "soil."
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