Animal husbandry – Aquatic animal culturing – Aquarium
Patent
1997-04-04
1998-09-01
Price, Thomas
Animal husbandry
Aquatic animal culturing
Aquarium
2104162, 210609, 210169, A01K 6304
Patent
active
057996121
ABSTRACT:
A compact and energy efficient photosynthetic filter for purifying and conditioning aquarium water comprising a receptacle (108) for holding aquarium water, a growth element (202) having a growth surface (204) of sufficient texture for growing adherent photosynthetic organisms, and a non-continuous illumination device for providing photosynthetic-sufficient illumination to the photosynthetic organisms. A non-continuous illumination device in accordance with a preferred embodiment of the invention comprising a continuous light source mounted over a submerged, rotatably mounted, elongated, and substantially cylindrical growth element (202). Rotation of growth element (202) under the light source providing non-continuous illumination to adhered photosynthetic organisms. Rotation of the growth element is preferably powered by a motor (212) or turbine (600). The rotation rates of the growth element are controlled as to provide non-continuous illumination having alternating predetermined intervals of intense illumination and predetermined intervals of low illumination. The photosynthetic filters taught herein provide for greater than 66% reductions in size and even greater reductions in the lighting requirements as compared to the photosynthetic filters taught heretofore. Further, significant improvements to nutrient and light distribution to the photosynthetic organisms are attainable, thereby improving filtering efficacy.
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Aquaricare & SurgArium Product Information Booklet, .COPYRGT.MMFI: Aquaricare Division PO Box 37531 Denver Co. 80237 Most pertinent pp.:1-6, 11-12, and order form p. 2; also attached copy of New Product Flyers pp. 1-4.
W.H. Adey and K. Loveland, Dynamic Aquaria: Building Living Ecosystems, Academic Press, Inc., San Diego, CA (1991) Copy of most pertinent pages: is provided, i.e., 231-247, 513-555,and color plate 5.
Y-K. Lee and S.J. Pirt, Energetics of Photosynthetic Algal Growths: Influence of Intermittent Illumination in short (40 s) Cycles, Journal of General Microbiology (1981), 124,43-52.
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