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Semi-Hydroponics (Semi-Hydro or S/H) was the first passive hydroponic technique utilized for orchids, originating in the early 1990s, using Lightweight Expanded Clay Aggregate (LECA) as a medium in solid-bottomed containers, into which one or two, small-diameter holes were placed in the sidewall, setting the depth of the internal reservoir.
A root ball and the growing medium required to grow a single plant. The medium will be washed and sanitized before being re-used. Under this system, water-tight growing containers are filled with a inert growing medium. A medium can consist of Expanded clay aggregate, rockwool cubes, or other inert materials. This is periodically flooded for a ...
Passive sub-irrigation, also known as passive hydroponics, semi-hydroponics, or hydroculture, [51] is a method wherein plants are grown in an inert porous medium that moves water and fertilizer to the roots by capillary action from a separate reservoir as necessary, reducing labor and providing a constant supply of water to the roots. In the ...
After the 2015 purchase, a Hawthorne executive told the press, "the lion's share of General Hydroponics business in North America is cannabis growers". [4] Scotts' CEO decided to spin off a cannabis business after a 2013 visit to a garden store in Yakima, Washington with a large section of hydroponic equipment. [ 5 ]
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The Village of Bailey Lakes, Ashland County, $192,470 at 3.21% for 20 years for the construction of waste water treatment plant improvements, including screening upgrades and new UV disinfection ...