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|To keep hard corals in a marine aquarium has become an ongoing challenge and an elaborated hobby.
It consistently seems to change in ideas bringing us nearer to the theoretical optimum for these animal colonies.
One of the keyroles apart of water quality and water movement is the supply of light. To offer light means to inject a lot of energy into the aquarium system. This energy however is not always perfectly used as light components are not fully suitable for individual species.
One should not forget that hard corals are a lot of different species but also individuals grown or collected from often highly different environments in the sea to which they adapted. And more the individual aspect of a colony in nothing else than it is often a unique genetic composition within the group which makes up the species in eyes of a taxonomist.
To give an example of extremes: There are hard corals, LPS and SPS species which can survive under extremely high temperature stress.
While probably most individuals of all these species which have a far distribution through other regions worldwide would give up living at
90 °F (32°C) they survive these conditions well in the waters of Southern Oman.
||Water is heated up there up to this temperature from surface down to approximately 50ft (15m) depth for a time to up to one month in summer when outside temperature in costal region easily exceed
120 °F (50°C). It happens regularly and each year.
But to start to understand underlying processes in metabolism of the endosymbiotic and unicellular algae in corals we have to generalize as an approach. These algae need light for photosynthesis. There are a lot of different metabolic steps included in photosynthesis, this energy binding process of which the corals profit, and it is not even fully known today.
It is not necessarily the light which is liked by the aquarist which is good for corals. Human perception of light does not match the algae´s demand. The spectral analysis curves of light needed for the endosymbiotic algae is not fully visible for humans and cannot be seen in full quantity as human eyes and perception cannot cope with the intensities needed. The Blue Moon Aquatics illumination series is one of the first nutritional luminaire that features the full demands of endosymbiotic algae to perform photosythesis at an optimum level. The light which is needed for photosynthesis is called PAR light – photosynthetic active radiation. This covers even parts of the UV-A light and ranges into the Infrared section and between those extremes of course the visible light. Within the visible light it is especially the bluish range (intensity rich light) which is used in photosynthesis. All other light colours are not as important but are also taken up by absorbing and emitting pigments. Those pigment do not have the function to create fluorescent colours but to create a higher amount of PAR light by changing and breaking down the light.
Of course all Blue Moon Aquatics illuminations can be combined to set up idividual lighting themes. Theres no end to applications for the Blue Moon Aquatics P3 accent, Pendant Series P30 or P100. The Blue Moon Aquatics Pendant Series actually brings a major improvement to the traditional lighting using a high intensity LED light source. This makes the Blue Moon Aquatics Pendant Series much more energy-efficient, maintenance-free and cooler-running than traditional lighting.
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