Method of treating water for horticultural uses

Details Method of treating water for horticultural uses Method of treating water for horticultural uses

1978-01-11

1979-04-17

Hart, Charles N.

Liquid purification or separation

With alarm, indicator, register, recorder, signal or...

Responsive to fluid flow

47 62, C02B 118

Patent

active

041499700

ABSTRACT:
The present invention relates to a method for operating a nutrient film plant growth technique so as to minimize the build up of one chemical in the circulating solution without a corresponding build-up of other chemicals, notably nutrient chemicals, therein. For example the feed of nutrient chemicals is in proportion to the feed of water to the solution, or the concentration of non-nutrients is maintained at a low level or discounted when assessing the amount of nutrient to add to the solution to maintain the desired nutrient level.

REFERENCES:
patent: 2747331 (1956-05-01), Steiner
patent: 3925926 (1975-12-01), Shigeo
patent: 4004369 (1977-01-01), Kato et al.
Douglas, J.S.; Advance Guide to Hydroponics; Drake Publishers, Inc.; New York (1976); pp. 68, 69, 134-137, 168-185.

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