Category Archives: Corals

Living sponges as filters for the reef aquarium – Part 2

Which are the most suitable sponges? Those aquariophiles who have already tried to keep in their tanks those bigger sized sponges available on the market, often have the impression that these organisms may represent an almost unsustainable animal group. For many sponges this can effectively be true, particularly if, during yield, transport and maintenance, they […]

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Living sponges as filters for the reef aquarium – Part 1

An aquarium keeper who intensely deals with the internal structure and physiology of sponges, will presumably be surprised. With a relative and quite big probability, indeed, he will find out that living sponges, in their functionality, are surprisingly similar to those devices developed during the last few years in aquariology for water cleaning treatments. As […]

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Symbionts anemones in reef aquarium – Part 2

Feeding I often get asked what is the food of anemones. Do I have to feed my anemone? Like in hard corals, anemone tentacles too contain zooxantelle, which alongside the byproducts of their photosynthesis cover the most part of carbon requirements. Because of their symbiont algae these sea anemones are limited in nature to areas […]

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The administration of food to corals

Is an additional administration of food to symbiotic corals necessary, or not? Surely, the aquarists’ opinions on this point disagree, and many completely give up feeding symbiotic corals in their aquarium. However, there should be no doubt on the fact that many species of symbiotic corals take nutritional particles from the water. The zooxanthellate corals […]

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Zeolites and bacteria – Experiences with the Zeovit Method – Part 2

Phosphate and natural nitrates values During the initial stages a relevant decrease in nourishing substances can create some degree of apprehension. But natural nitrate and phosphate levels, measured in reef sea water, are equally very low. Fosså & Nilsen (1992) report 0.002 mg/l for nitrates, less than 0.015 mg/l for dissolved phosphates. The result of […]

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