The Small-Polyp Stony (SPS) corals have small polyps on
a calcerous skeleton. They are usually either branching or plated. For
the most part they enjoy bright light and strong currents. They are often
fragile and are propagated by breaking off pieces.
Care and feeding:
SPS corals used to be considered very challenging. A few discoveries
in the last decade or so have brought them into the realm of the average aquarist.
Nowadays it is not uncommon to see aquariums with various species of acropora,
hydnophora, and other species of SPS corals growing and thriving.
Since SPS corals usually occupy the reef flats in turbulent water,
they require high light levels produced by VHO fluorescent or metal halide
(see Mini-reef: Lighting) and
strong water currents or turbulence. They also require very stable temperatures
and excellent water quality (low organic nutrient levels) to thrive.
Levels of calcium, strontium, and trace elements must be maintained.
Sources vary on whether they need feeding or not. Probably some can be fed
but it is not required to do so.
Click on the small images below to access more info on
each type of coral:
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