- CropKing, Inc.
With information for commercial hydroponic users as well as hobbyists.
- General Hydroponics
Manufacturer of hydroponic gardening and greenhouse equipment and fertilizers.
- Bloomington Wholesale Garden Supply
Offers hydroponic and organic gardening supplies.
- Green Air Products
Manufactures a line of horticultural, atmospheric and nutrient control systems for both the hobbyist and the small-scale greenhouse grower.
- Hydrofarm, Inc.
Maker of hydroponics gardens, growlights, and software for enthusiasts and commercial growers.
- Canadian Wholesale Hydroponics
Offers wholesale hydroponic supplies and equipment including grow lights, nutrients, complete indoor growing systems, and an online gardening forum.
- Life Circle Hydroponics
Sells kits, supplies, and parts including medium, lights and bulbs, seeds, as well as technical assistance and testing.
- Autogrow Systems
Manufacturer of hydroponic and greenhouse automation equipment.
- Kit Masters
Manufacturer and supplier of pipe clips, greenhouses, rain shelters, hydroponics kits, and accessories.
- Allie's Wholesale Garden Supply
Hydroponics and fertilizer development.
- Blooms & Greens
Hydroponics research and development company offering vegetables.
- Advanced Nutrients
Manufacturer of hydroponics equipment, hydroponics plant nutrients, and hydroponic supplies.