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Horizon Hydroponics
Horizen Hydroponics started online in November of 1999 as result of an industrial accident. After much success and realizing the industry potential, Horizen Hydroponics opened a retail location in Grand Rapids, Michigan in 2002.

Superior Growers Supply, Inc.
In November of 1983, Superior Growers Supply®, Inc. (SGS®) started as a mail order business, operating out of a small barn. The first, and only, product available for sale was a 1000 watt metal halide light kit. Since that time SGS has become one of the leading retail hydroponic and indoor gardening supply merchants in the USA.