# US 2021/0329863 A1 · Deep water culture hydroponic system

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- Number: US 2021/0329863 A1
- Document ID: US20210329863A1
- Status: Published application
- Kind: A1
- Application number: 17/371,741
- Filed: 2021-07-09
- Published: 2021-10-28
- Earliest claimed: 2020-04-17
- Assignees: Hydra Unlimited, LLC
- Applicants: Hydra Unlimited, LLC
- Inventors: Daniel N. Campau; Scott T. Kloote
- Web page: https://patentgrep.com/patent/US20210329863A1

## CPC

- A01G 31/02: Special apparatus therefor (self-acting watering devices A01G27/00)
- A01G 31/024: {Hydroponic cultivation wherein the roots are totally immersed in the nutritive solution, e.g. cultivation on floating rafts or deep-water culture}
- A01G 27/005: {Reservoirs connected to flower-pots through conduits}
- A01G 27/008: {Component parts, e.g. dispensing fittings, level indicators}
- A01G 31/065: {with means for recycling the nutritive solution}
- Y02P 60/21: Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
- A01G: HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING (picking of fruits, vegetables, hops or the like A01D46/00; propagating unicellular algae C12N1/12)
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

The specification discloses a DWC hydroponic system that includes a plurality of grow tanks, a circulation pump, a nutrient supply line fluidly connecting the outlet of the circulation pump to the grow tanks, and a tank drain line fluidly connected to the grow tanks. Each of the grow tanks is fluidly connected in parallel between the nutrient supply line and the tank drain line. The system further includes a pump suction line fluidly connected to the inlet of the circulation pump, and a plurality of bridge connectors each fluidly connecting the tank drain line to the pump suction line in accordance with a defined pattern. The DWC system may further include a nutrient supply fluidly connected to the circulation pump intake through a valve arrangement.

## Claims

### Claim 1

A hydroponic system comprising:
a plurality of grow tanks;
a circulation pump having an inlet and an outlet;
a nutrient supply line fluidly connected to the outlet of the circulation pump;
a plurality of tank supply lines each fluidly connecting the nutrient supply line to one of the grow tanks;
a tank drain line fluidly connected to the inlet of the circulation pump;
a plurality of tank drain connection lines each fluidly connecting one of the grow tanks to the tank drain line; and
a nutrient supply connected to the inlet of the circulation pump.

### Claim 2 (depends on 1)

A hydroponic systems as defined in claim 1 wherein the nutrient supply comprises a nutrient supply tank.

### Claim 3 (depends on 2)

A hydroponic system as defined in claim 2 further comprising control valve arrangement between the nutrient supply tank and the inlet of the circulation pump, control valve arrangement including a shutoff valve enabling the nutrient supply tank to be shut off from the inlet of the circulation pump.

### Claim 4 (depends on 3)

A hydroponic system as defined in claim 3 wherein the control valve arrangement includes a foot valve.

### Claim 5 (depends on 1)

A hydroponic system as defined in claim 1 wherein the nutrient supply includes a syringe.