Culture apparatus for the maintenance of captive marine life

摘要

1,132,626. Aquaria. AQUARIUM SYSTEMS Inc. 21 Sept., 1966 [4 Oct., 1965], No. 42152/66. Heading A1A. [Also in Division B1] Water in an aquarium is circulated through a foam polyurethane filter 8 over cooling coils 11 and through a further filter 12, which comprises particulate magnesium-rich calcareons material, before passing through conduit 13 and pump 14 to a manifold 19 from which the water is sprayed back into the aquarium and thus aerated.