Plant husbandry – Water culture – apparatus or method – Nutrient recirculation system
Patent
1978-01-18
1980-02-26
Burr, Edgar S.
Plant husbandry
Water culture, apparatus or method
Nutrient recirculation system
47 79, A01G 3102, A01G 2506
Patent
active
041898672
ABSTRACT:
A plastic tray having short legs and a perforated bottom fits securely within a plastic container, the tray being adapted for carrying vermiculite and the container being adapted for holding nutrient solution. The tray also has an enlarged upper portion defining a channel-shaped inner ledge between the enlarged and unenlarged portions thereof. An electric pump is disposed within a compartment of the tray, and a plastic tube runs from the pump into the nutrient solution and up the wall of the tray to the channel-shaped ledge, into which it snaps along the sides of the tray. The tube is perforated where it contacts the nutrient solution, and has a series of apertures along the portion snapped to the walls of the tray, such that a mixture of air and nutrient solution can be pumped through the tube into the vermiculite.
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Bratlie Steven A.
Burr Edgar S.
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