A reef aquarium is a delight. Hard or soft corals healthy and growing. Fish cruising about, in and out of the rocks, hoping to find something edible. Beautiful coralline algae growing on rocks and on the rear glass. Tiny life forms going about their business. Just as on the wild reef. Except this is a captive reef, assisted and maintained by an aquarist and supported by nature.
The aquarist is proud of the creation, and rightly so. He/she has expended a lot of time on research, and money on equipment and livestock. Time is also spent on maintenance, such as cleaning the glass of unwanted algae, ensuring the reef structure is safe, and checking and removing unwanted items from the sand and/or rocks. Seawater parameters are maintained, with additives where necessary.
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