As time goes on, you can slowly add more fish, corals and other invertebrates. Generally speaking, corals and most invertebrates (Hermit Crabs and Snails) do not add much of a bio-load to an aquarium, however fish, even small ones can add dramatically to the amount of ammonia that a new biological filter will be called upon to process.
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Top off the tank with freshwater as needed.
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Monitor the water quality, especially the ammonia levels.
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Look for signs of stress (frayed fins, cloudy eyes, lack of appetite).
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Add new fish only after the tank recovers from the last addition.
- Due to stress, new arrivals are more prone to parasitic outbreaks, especially Marine Ich so keep an eye out for them and treat promptly.
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Corals will be the most sensitive things in your tank, so add them very slowly.
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Clean your mechanical filter weekly, but do not disturb the biological filter during the 1st month.
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After the 1st month, begin a Scheduled Tank Maintenance Program.
Take the time to enjoy your new tank.
