Fish raising
First Claim
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1. A method of raising trout and salmon for food fish from fry to marketable size over a period of months comprising the steps of:
- continuously maintaining said fish for a period of months in a volume of flowing water in the range of about 300 to 3,000 gallons at a fish to water ratio of at least about one fish per gallonperiodically intermittently recirculating said water at intervals by removing it from adjacent the bottom of said volume and reintroducing it into the top of said volume in a generally closed system by causing it periodically intermittently to flow in said system in increasing quantity over said period of months as said fish grow in sizetreating said recirculating water before reintroducing it into the top of said volume by;
removing particulate matter from said waterremoving ammonia from said water to maintain a level of ammonia of less than about 1 ppm in said volumeadding oxygen to said water to maintain a level of oxygen of more than about 6 ppm in said volumeadjusting the pH of said water to maintain a pH of between 6.0 and 8.0 in said volume andrefrigerating said water to maintain the temperature of said volume of water in the range of about 50°
to 60°
F.periodically feeding said fish at intervals with floating food particles an increasing quantity of food over said period of months as said fish grow in size andremoving said fish from said volume after they reach marketable size.
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Abstract
Raising food fish utilizing apparatus including a fish tank, a biological trickling filter mounted above it and a particulate filter above the trickling filter, by recirculating water from the fish tank first through the particulate filter to remove particulate matter and adjust pH of the water and refrigerate it and then through the trickling filter to remove ammonia and add oxygen, the water in the fish tank being circulated and the fish periodically being fed over a period of months until they reach marketable size.
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Citations
24 Claims
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1. A method of raising trout and salmon for food fish from fry to marketable size over a period of months comprising the steps of:
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continuously maintaining said fish for a period of months in a volume of flowing water in the range of about 300 to 3,000 gallons at a fish to water ratio of at least about one fish per gallon periodically intermittently recirculating said water at intervals by removing it from adjacent the bottom of said volume and reintroducing it into the top of said volume in a generally closed system by causing it periodically intermittently to flow in said system in increasing quantity over said period of months as said fish grow in size treating said recirculating water before reintroducing it into the top of said volume by; removing particulate matter from said water removing ammonia from said water to maintain a level of ammonia of less than about 1 ppm in said volume adding oxygen to said water to maintain a level of oxygen of more than about 6 ppm in said volume adjusting the pH of said water to maintain a pH of between 6.0 and 8.0 in said volume and refrigerating said water to maintain the temperature of said volume of water in the range of about 50°
to 60°
F.periodically feeding said fish at intervals with floating food particles an increasing quantity of food over said period of months as said fish grow in size and removing said fish from said volume after they reach marketable size. - View Dependent Claims (2, 3)
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4. Apparatus for raising food fish to marketable size over a period of months comprising
a fish tank for maintaining said fish in a volume of water pump means for recirculating said water by removing it from said tank and reintroducing it into said tank in a generally closed system treating filter means for treating said recirculating water before reintroducing it into said volume to remove ammonia from said water and add oxygen to said water particulate filter means for removing particulate matter from said water feed means for feeding said fish and control means for intermittently periodically at intervals operating said pump means for increasing lengths of time within said intervals over said period of months for periodic intermittent recirculation of said water for increasing lengths of time within said intervals over said period of months as said fish grow in size.
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5. Apparatus for raising food fish to marketable size over a period of months comprising
a fish tank for maintaining said fish in a volume of water pump means for recirculating said water by removing it from said tank and reintroducing it into said tank in a generally closed system a trickling filter tank for treating said recirculating water before reintroducing it into the top of said volume to remove ammonia from said water and add oxygen to said water a particulate filter tank mounted above said trickling filter tank for removing particulate matter from said water prior to said treating of said water feed means for feeding said fish with floating food particles circulating means for circulating said water in said fish tank to cause it to flow in a generally circular path and control means for simultaneously intermittently periodically at intervals operating said pump means and said feed means for simultaneous periodic intermittent recirculation of said water and feeding of said fish.
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6. Apparatus for raising food fish to marketable size over a period of months comprising
a fish tank having a water capacity in the range of about 300 to 3,000 gallons for continuously maintaining said fish for a period of months in a volume of flowing water at a fish to water ratio of at least about one fish per gallon pump means for recirculating said water by removing it from adjacent the bottom of said tank and reintroducing it into the top of said tank in a generally closed system a trickling filter tank mounted above said tank for treating said recirculating water before reintroducing it into the top of said volume to remove ammonia from said water and add oxygen to said water a particulate filter tank mounted above said trickling filter tank for removing particulate matter from said water prior to said treating of said water feed means for feeding said fish with floating food particles circulating means for circulating said water in said fish tank to cause it to flow in a generally circular path and control means for simultaneously intermittently periodically at intervals operating said pump means and said feed means for simultaneous periodic intermittent recirculation of said water and feeding of said fish.
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7. Apparatus for raising food fish to marketable size, comprising:
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a generally open top fish tank having an outlet a trickling filter tank mounted above said fish tank and having a bottom outlet for drainage of water therefrom into said fish tank a particulate filter tank mounted above said trickling filter tank generally for drainage of water therefrom into said trickling filter tank water recirculation means, including a pump, connected to the outlet of said fish tank for removing water from said fish tank particulate filter water distribution means connected to said water recirculation means for distributing water onto the surface of filter materials in said particulate filter tank, trickling filter water distribution means connected to the outlet of said particulate filter tank for distributing water onto the surface of filter materials in said trickling filter tank fish tank water distribution means connected to the outlet of said trickling filter tank and fish tank food distribution means for distributing food particles to said fish tank. - View Dependent Claims (8, 9, 10)
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11. Apparatus for raising food fish to marketable size, comprising:
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a generally open top fish tank having a bottom outlet a trickling filter tank, having a capacity and size of about that of said fish tank, mounted above said fish tank and having a bottom outlet for drainage of water therefrom into said fish tank a generally annular particulate filter tank mounted above said trickling filter tank for drainage of water therefrom into said trickling filter tank generally closed circuit water recirculation means, including a pump, connected to the bottom outlet of said fish tank for removing water from the bottom of said fish tank particulate filter water distribution means connected to said water recirculation means for progressively distributing water in a predetermined pattern onto the surface of filter materials in said particulate filter tank, trickling filter water distribution means connected to the outlet of said particulate filter tank for distributing water onto the surface of filter materials in said trickling filter tank fish tank water distribution means connected to the outlet of said trickling filter tank, said fish tank water distribution means having outlet means positioned above the surface of water in said fish tank, said outlet means being generally tangentially directed to cause circular flow of water in said fish tank fish tank food distribution means for distributing floating food particles on the surface of water in said fish tank and control means for intermittently operating said pump means for intermittent recirculation of water. - View Dependent Claims (12, 13, 14)
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15. Apparatus for raising food fish to marketable size, comprising:
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a generally open top circular fish tank having a capacity of between about 300 to 3000 gallons of water and a depth to diameter ratio of at least 1;
3 and having a bottom outleta generally circular open top trickling filter tank, having a capacity and size of about that of said fish tank, mounted above said fish tank generally concentrically therewith and having a bottom outlet for drainage of water therefrom into said fish tank a generally annular open top particulate filter tank mounted above said trickling filter tank generally concentrically therewith for drainage of water therefrom into said trickling filter tank generally closed circuit water recirculation means including a pump connected to the bottom outlet of said fish tank for removing water from the bottom of said fish tank control means including timing means for intermittently operating said pump for intermittent recirculation of water particulate filter water distribution means connected to said water recirculation means for progressively distributing water in a predetermined pattern onto the surface of filter materials in said particulate filter tank, said particulate filter water distribution means being mounted for rotary movement above said particulate filter tank and including a generally tangentially directed water jet outlet for driving said means including said jet outlet around said particulate filter tank and stepping means responsive to intermittent water flow through said jet outlet for intermittently stepping said jet outlet around said particulate filter tank for successive utilization of discrete surface portions of filter materials therein trickling filter water distribution means connected to the outlet of said particulate filter tank fish tank water distribution means connected to the outlet of said trickling filter tank, said fish tank water distribution means having outlet means positioned above the surface of water in said fish tank, said outlet means being generally tangentially directed to cause circular flow of water in said fish tank and fish tank food distribution means for distributing floating food particles on the surface of water in said fish tank, including a plurality of circumferentially spaced food receptacles mounted on the periphery of said fish tank and a rotatably mounted operating arm, driven by said particulate filter water distribution means, cooperating with said receptacles successively to release food therefrom. - View Dependent Claims (16)
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17. refrigeration means having a manifold connected to the outlet of said particulate filter tank for cooling water from said particulate filter
said trickling filter water distribution means being connected to said refrigeration manifold for distributing refrigerated water onto the surface of filter materials in said trickling filter tank.
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18. A method of raising food fish over a period of months comprising the steps of:
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continuously maintaining said fish for a period of months in a generally uniform volume of water in a tank of uniform volume periodically intermittently recirculating said water by removing it from said tank and reintroducing it into said tank in a generally closed system by causing it at intervals periodically intermittently to flow in said system for increasing lengths of time within said intervals over said period of months as said fish grow in size and feeding said fish an increasing quantity of food at said intervals over said period of months as said fish grow in size.
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23. A method of raising food fish over a period of months comprising the steps of:
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continuously maintaining said fish for a period of months in a generally uniform volume of water in a tank of uniform volume periodically intermittently recirculating said water by removing it from said tank and reintroducing it into said tank in a generally closed system by causing it periodically intermittently to flow in said system in increasing quantity over said period of months as said fish grow in size and feeding said fish an increasing quantity of food over said period of months as said fish grow in size.
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Specification
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Current AssigneeAmerican Fish Company
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Original AssigneeAmerican Fish Company
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InventorsHoult, David P.
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Primary Examiner(s)Chamblee, Hugh R.
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Application NumberUS05/592,733Time in Patent Office719 DaysField of Search119/3, 119/5, 119/2, 119/4US Class Current119/227CPC Class CodesA01K 61/00 Culture of aquatic animals ...A01K 61/10 of fishA01K 63/04 Arrangements for treating w...Y02A 40/81 Aquaculture, e.g. of fish
