General Hydroponics

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General Hydroponics is one of the oldest companies in the industry. Their nutrients have been a staple for many hydroponic system for years and were one of the first true hydroponic nutrients. GH is also beloved by many soil growers and there are even variation feeding schedules that people have developed and blogged about. General Hydroponics has a several base nutrients to meet the needs of virtually any garden and a full line of supplements as well.