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7335298 Modular aquarium filter  
A modular aquarium filter includes one or more cartridges connected in series. The cartridges may contain filter media for chemical, biological and/or mechanical filtration. In addition, the...
7316776 Aquarium filtration system with bio-reactor  
An improved aquarium filtration system is provided which includes a bio-reactor chamber. The bio-reactor chamber includes a plurality of bio-balls which have a high surface area for collecting...
7311819 Aquarium filter  
The present invention is an aquarium filter that treats water mechanically, chemically and biologically, provides maximum and uniform circulation and aeration of water, prevents channeling, reduces...
7244356 Autotrofic sulfur denitration chamber and calcium reactor  
The disclosure is directed to systems and methods for conditioning water in an environment for holding aquatic life. The systems include various chambers for processing water, such as a chamber...
7097046 Automatically cleaning filter assembly for a liquid-carrying loop  
A filter assembly for an aquarium has a self-cleaning filter. A fine mesh filter screen is disposed between an inlet and an outlet for filtering solid matter from the water that is pumped from the...
7094336 Aquarium device with enhanced water filtration  
A desktop aquarium device with enhanced water filtration is provided. The aquarium device contains a base and a spherical tank. A filtering dish is installed inside the base. The filtering device...
7094335 Aquarium filtration system  
A filter system for use with an aquarium includes a housing having a pre-filter chamber, a biological chamber, and a sump. A protein skimmer receives water flowing from the pre-filter chamber and...
7060181 Dual density filter cartridge  
The invention relates to aquarium filters providing improved water filtration without accelerated clogging. The present invention also relates to methods of using such filters.
7033491 Aquarium filter  
An aquarium filter to increase dissolved oxygen and improve water quality comprised of a box containing a segregated water inlet tank, a water collection tank, and multiple filtration tanks; water...
7001519 Integrated closed loop system for industrial water purification  
The present invention relates to an integrated closed loop system for aquaculture in at least one culturing tank and using continuous bioreactor technology for the biological treatment and removal...
6869530 Multifunctional internal marine aquarium filter  
An internal marine aquarium filter that provides within a single enclosure protein skimming, biological, mechanical and chemical filtration where the unit creates direct adjustable current for the...
6866773 Filtration cartridge  
A filtration cartridge, for purifying biologically contaminated liquids, comprised of a framework having a plurality of voids and abundant surface area extensions and forming a cavity(s) for...
6858143 Apparatus for the biological purification of water containing organic materials and derived products thereof  
The present invention refers to an apparatus for the biological treatment of waters, either fresh or salt waters, in aquarium and in basins for aquaculture, comprised of at least one reactor tank,...
6843909 Three-stage aquarium filtration  
A filter unit for filtering aquarium water includes a packet having porous filter walls configured for mechanical filtration of aquarium water, a filter medium within the packet, between the filter...
6837991 Algae scrubber filtration system  
An improved algae scrubber system having a partially submerged rotatable drum ( 16 ) wrapped in plastic mesh or algae screen ( 18 ). The rotatable drum ( 16 ) is supported by a water treatment tank...
6830681 Device and method for holding water for accommodating and growing aquatic organisms  
Device and method for keeping and growing aquatic organisms by optimizing the microbiological treatment of water. The device comprises a first chamber for holding oxygen-depleted water and a second...
6818123 Water clarification treatment system through denitrification reduction by facultative anaerobic bacteria  
The invention is a water purification system through denitrifying reduction with faculative anaerobes in which a nitrate harmful in the breeding of creatures such as tropical fishes and coral for...
6797163 Filtration devices  
The present invention relates to filter devices and methods of using such devices for mechanical, chemical and biological filtration pond and/or aquarium water.
6793813 Sealed filtration system  
A sealed filtration system includes a housing, having two chambers, that can be submerged. One chamber houses a plurality of subchambers in which various filter media are located, and the other...
6730226 Water purifying method and apparatus  
A method for purifying water including nitrification by aerobic bacteria and denitrification by anaerobic bacteria in an apparatus by providing an elongated, closed water channel.
6709574 Fish pond filter system  
A system for filtering and treating waste generated or collected in the water of a fish pond. The system includes a pump, pre-filter, piping, a valve assembly, and a filter media container...
6706176 Biological filter attachment for aquarium hang-on filters  
A biological filter for an aquarium hang-on filter that attaches to the outflow of the aquarium hang-on filter. The biological filter includes a multiplicity of convoluted plastic channels over...
6641732 Cross-flow tank system for aquatic life  
A tank system and a method for accommodating aquatic life and particularly fish. The tank system comprises a holding tank for holding fluid to sustain aquatic life disposed therein and a filtering...
6585888 Aquarium filter system with interchangeable filter cartridges  
An aquarium filter system comprising a pump, a manually positionable valve assembly, and one or a plurality of interchangeable filter cartridges. The filter cartridges are interchangeable and...
6447681 Aquaculture wastewater treatment system and method of making same  
An aquaculture wastewater treatment system is provided including three wastewater treatment subsystems. The first subsystem is comprised of a fish raceway solids removal channel populated with...
6245236 Reciprocating biological filter  
A biological filter for filtering a stream of falling liquid, the filter comprising a body movable between a first and a second position, and a first filter portion coupled to the body such that...
6210567 Filtration device for tank water for aquarium fish  
A filtration device for tank water for aquarium fish having several partitions dividing the casing into several filtration chambers. A removable filtration cartridge is inserted into each...
6123841 Waste-water filtration and purification device for fish cultivation  
A waste-water filtration device for fish cultivation comprises a thin rotatable filter material through which waste water flows from the inside surface to the outside surface, a removing means...
6117313 Method and apparatus for aquaculture and for water treatment related thereto  
An improved aquaculture system is provided which, in various embodiments, utilizes a single integrated unit to perform the biologic filtering, aeration and degassing functions; has a fish tank with...
6086755 Floating hydroponic biofiltration device  
A floating hydroponic biofiltration device for use in a body of oxygenated water containing plant-eating fish, includes, in series, (a) a float and a terrestrial plant hydroponically mounted in a...
6080304 Clarifying device for use in an aquarium  
A clarifying device for use in an aquarium that includes a casing having at least one transparent portion. A plurality of clarifying pieces are confined in the casing. Each piece has a bulk density...
5965016 Fluidized bed aquarium filtration system  
An aquarium filter for removing chemical and physical waste from an aquarium. The filter can include a mechanical filter portion, followed by a fluidized bed of particles, such as sand, for...
5868926 Rotating biological filter system  
A biological filter for treating water in an aquatic system, composed of a porous water absorbing body of material adapted for rotation, and a member for supplying water to the body to be absorbed...
5866018 Vortex aquarium filter  
An aquarium filter is provided having a first annular chamber and an inlet or near the top of the chamber. The inlet is constructed and positioned to direct water into the chamber in a swirling...
5863426 Aquarium filter device  
An aquarium filter device has a base seat, an air bubble producing device, a hollow lower casing, a hollow lower cylinder, a hollow upper cylinder, and a top disk. The base seat has an upper ring,...
5853591 Rotating biological aquarium filter system  
An aquarium filter system having a rotatably mounted filter body. The filter body is structured such that when mounted with a portion of the filter body submerged in moving water, rotational...
5853578 Method for biological purification of liquids and biological filter for purification of liquids  
A biological filter for purification of liquids has primary filtering stages (52a, 52b, 52c) of a particulate material and secondary filtering stages (54, 56, 58) containing a fine-fiber material....
5807480 Filtration device in a tank having control unit to generate high and low tides in tank  
A filtration device for filtering and cleaning water to be supplied to a water tank comprises a main body having an upper end opening selectively closed by a lid mounted thereon in an installed...
5799612 Compact and efficient photosynthetic water filters  
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...
5792368 Fluidized bed filter  
A fluidized bed filter is described and claimed. The filter is exemplified for use in an aquaculture system. A preferred embodiment of the filter of the subject invention comprises a cylinder...
5755961 Aquarium system  
An aquarium system includes an inlet reservoir, an aquarium tank defining a container for water in fluid communication with the inlet reservoir to receive water displaced from the inlet reservoir,...
5753114 Device for purifying water by means of water fleas  
Various filters are known for purifying water in an aquarium, a fish pond, a swimming pool or a storage container at a horticultural farm. The device according to the invention contains filtering...
5728293 External filter assembly for aquariums  
External filter assembly for aquariums includes a filter chamber containing a mechanical and/or chemical filter and a functionally active filter upstream of the mechanical filter for actively...
5705057 Fluidized bed biological filter assembly for fish tanks  
A fluidized bed biological filtration assembly for use with fish tanks and the assembly has a vertically oriented tubular housing with an elongated upper inner tubular member centrally positioned...
5693220 Aquarium filtration system for semi-aquatic animals  
An aquarium filtration system for semi-aquatic animals, such as turtles, frogs and the like, which provides for collection and removal of waste material or debris generated within the aquarium...
5679253 Rotating biological aquarium filter system  
An aquarium filter system having a rotatably mounted filter body. The filter body is structured such that when mounted with a portion of the filter body submerged in moving water, rotational...
5672268 Fluid treatment apparatus  
Fluid treatment apparatus including a vessel having a fluid inlet port, a fluid outlet port and a deflector plate and containing a medium and an inlet having an inlet end in flow communication with...
5667671 Salt water aquarium integrated filter  
An aquarium integrated filter (10) that is designed to maintain the purity, cleanliness and biological health of an aquarium (250). The filter (10) includes within a single enclosure (12) all the...
5628905 Biological aquarium filter with means to keep the siphon tubes primed  
A filtration apparatus for an aquarium comprising of mechanical, biological and chemical filter mechanisms for removing impurities from water and an intake tube/pre-filter arrangement for...
5618428 Filtration system for aquariums  
A filtration system for an aquarium having water and fish. A container is mounted in juxtaposition to the aquarium and a porous filter is disposed in the container. The top of the filter is...
Matches 1 - 50 out of 131 1 2 3 >