GTG Hydroponics
Provides a wide variety of indoor gardening supplies, grow lights, organic fertilizers, as well as advanced climate and carbon dioxide controllers. Online forum and FAQ.
http://www.gtghydroponics.com/

Home Harvest Garden Supply
Hydroponic, organic, hobby greenhouse, container and indoor garden supplies. Product information and researched links directory.
http://homeharvest.com/

CropKing
Offers controlled environment growing systems and technology for specialty crops including hydroponic vegetables, aquaculture and exotic mushrooms.
http://www.cropking.com/

Hydroasis
Full-service hydroponic and organic gardening store. Indoor lighting, many hydroponic systems, nutrients and organics. Culver City, CA.
http://www.hydroasis.com/

Sea Of Green
Hydroponic and horticultural gardening systems and supplies. Ships in USA.
http://www.sea-of-green.com/

Interior Gardens
Enjoy full spectrum grow lights and supplies for a year round indoor flower, fruit and vegetable garden. Also hydroponics supplies.
http://www.interiorgardens.com/

Horizen Hydroponics
Offering grow lights, organic fertilizers, soil amendments, and environmental controls. Includes used equipment.
http://www.hhydro.com/

Growco Indoor Gardening
Hydroponic and intense lighting systems plus grow room supplies and nutrients.
http://www.4hydroponics.com/

Greenfire Gardening Supplies
Hydroponic and organic gardeners' supplies for both commercial growers and hobbyists.
http://www.greenfire.net/

Harvest Moon Hydroponics
Supplies for hydroponics. Greenhouses, artificial lighting and new plant varieties.
http://hmoonhydro.com/

FutureGarden
Features a complete line of grow lights, hydroponic gardens and growing supplies.
http://futuregarden.com/

Discount Hydroponics
Sells grow lights, nutrients, systems, pest control, blowers and hydroponic accessories.
http://www.discount-hydro.com/

TCS Hydroponics
Specializes in indoor gardening, with a line of grow lights, hydroponic systems, supplies, organic fertilizer, and natural pest control.
http://www.tcs-hydroponics.com/

Foothill Hydroponics
Everything you need to grow plants indoors, hydroponic systems, nutrient, rockwool, perlite, pumps, and trays. Free expert advice.
http://www.foothillhydroponics.com

Hydroponic Center Guy Dionne
Offers a complete line of professional quality hydroponic and aeroponic materials, greenhouse management equipment, lighting systems, growing mediums, and fertilizers. Quebec Canada.
http://www.hydrodionne.com

Aquamist Hydroponics Products
Great source for hydroponic/aeroponics supplies. Knowledgeable and helpful staff. Palo Alto, CA.
http://www.aquamist.com

American Agritech
Manufacturers products for the hydroponic industry. Hydroponics is the method of growing plants without soil
http://www.americanagritech.com/

Discount Garden Supply
Hydroponic equipment, lights, fans, and fertilizers. Spokane, Washington
http://www.discountgarden.com/

3R Lighting Company
Hydroponic, bioponic, indoor gardening equipment, grow lights, nutrients, and systems.
http://www.3rlighting.com

BG Hydro
Offer a large selection of indoor hydroponics supplies and systems.
http://www.bghydro.com

Sunstreamer Grow Light
High intensity fluorescent light for indoor growing, a cool alternative to metal halides and sodium lighting.
http://www.sunstreamer.com

Grow-Light
Hydroponic grow lights, mylar, timers, bulbs lamps, nutrients, ventilation, hydroponic systems, and odor control.
http://www.grow-light.com

Hydroponic Equipment
Online catalog includes everything from aeroponics to TDS testing. Hydroponic growing systems, lighting, organic fertilizers, rockwool, books and accessories.
http://www.hydroponicequipment.com

Harry's Garden Center
Indoor gardening and hydroponic supplies store featuring lighting nutrients growing systems, books and magazines, cloning and propagation supplies, environmental controls, Co2 emitters, and rockwool. Warren, Michigan.
http://hydroharrys.com/

Progressive Growth Garden Supply & Hydroponics
Hid lighting, hydroponic systems, ph, nutrients, and reflectors. BC,Canada.
http://www.progressive-growth.com

LightYears Indoor Garden Supply
HID lights, ventilation systems, hydroponic systems, plant nutrients, and custom-made equipment. Serving all of southern BC and Albetra.
http://www.lightyearsbc.com

Greenfields Hydroponics
Products include complete grow kits, lights, books, growing media and nutrients, ventilation and odor control supplies.
http://www.hydroponic-shop.com

Best Grow Lights
Offering grow light systems, components, lamps and accessories.
http://bestgrowlights.com

Hydroponic Garden Supplies
A full line of hydroponic supplies. Complete systems, as well as, nutrients and rockwool to maintain existing systems.
http://www.gardenallyear.com/

Vertical Hydroponic Gardening
Showroom, products, services, and assembly sections. Price lists, library, articles, brochures, manuals, technical papers, related sites, location map, and testimonials.
http://vertigro.com

EzHydroKit
Offers complete hydroponic systems, including nutrients, pH kits, and a grow guide.
http://www.ezhydrokit.com

GreenCoast Hydroponics
Offers grow lights, systems, and environmental controllers. Includes a library of indoor growing information.
http://www.gchydro.com

Better Than Nature
Indoor gardening products and systems. PH, TDS, temperature monitoring systems for commercial gardening, aeroponic and hydroponic garden greenhouses.
http://www.betterthannature.com/

Atlantis Hydroponics
Suppliers of hydroponic equipment, nutrients, hormones, complete hydro and lighting systems. Also has stores in Georgia, USA.
http://atlantishydroponics.com/

GrowroomsUK
Hydroponic suppliers with a range of products, including equipment, growing media, supplies, and lighting. In the United Kingdom.
http://www.growroomsuk.com/

Hydroponic Vegetable Gardening
Offer various products as well as literature and a newsletter.
http://www.hydroponicvegetablegardening.com

Interior Water Gardens: A Hydroculture Oasi
Offers kits for growing Orchids in hydroculture and hydroponics. Also supplies, nutrients, culture instructions, and a photo gallery.
http://www.interiorwatergardens.com/

Greenstream Hydroponics
Offers kits and systems of various sizes, grow lights, nutrients, organics, and related tools.
http://www.greenstream.co.uk

EzGro
Vertical garden system. Information and contact details.
http://www.theezgro.com

Be Well Hydroponics
Offers full range and contact details for shop in Charlotte, North Carolina.
http://www.bewellhydroponics.com/

4 Ever Sun
Manufacturer of indoor hydroponic self contained grow boxes and accessories.
http://www.4eversun.com

True Vision Hydroponics
Sells a large assortment of indoor organic products and educational material.
http://www.truevisionhydroponics.com

Bustan Urban Gardening Essentials
Includes propagation supplies, grow mediums, soil amendments, nutrients and supplements, horticultural lighting, tools and accessories, books, containers, seeds, bulbs, and exotic plants.
http://www.bustan.ca

Plant Lighting
Hydroponic and organic gardening systems and supplies. Lights, fertilizers, supplements and organic nutrients, grow media, and greenhouse controls for hobby and commercial growers.
http://www.plantlightinghydroponics.com/

The Grow Room.
specializing in hydroponics, HID lighting, nutrients, indoor grows systems, environmental controls and greenhouse design.
http://www.thegrowroom.com/

Tronix Industries
Automation of the hydroponic greenhouse and growroom using plug n play devices.
http://www.growtronix.com

Big Blue Air Products
Manufacturer of odor control products for indoor gardens and their ventilation systems.
http://www.blueairproducts.com

L&M Hydro Shop
Offers a small selection of indoor supplies.
http://www.landmsales.com

The Hydroponicum
Hydroponics information and online catalog includes starter kits, nutrients and propagation.
http://www.thehydroponicum.com/

Everybody's Garden Center
Sells a wide variety of products which include natural pest and climate control, gardening tools, greenhouse lighting, and soils. Portland, OR
http://www.everybodysgardencenter.com

Thin Air Growing Systems
Manufacture and sell an aeroponics system where the roots never stand in water.
http://www.thinairgrowingsystems.com

The Lazy Gardener
Offering various products such as orchid supplies, supplements, pumps and accessories.
http://www.thelazygardeners.com

Supercloset
Sells hydroponic cabinets and systems.
http://www.supercloset.com

Hydro Wholesale
Sells wide selection of products such as irrigation supplies, books and magazines and testing equipment.
http://www.hydrowholesale.com

Club Hydro
Sells a variety of outdoor and indoor gardening equipment.
http://www.clubhydro.com

Cheap Hydroponics
Offers full range of products such as hydroponic systems, grow lights, nutrients, and accessories.
http://cheaphydroponics.com

Grow Light Source
Indoor supplies such as systems and parts, propagation and cloning items.
http://www.growlightsource.com/catalog/default.php

Green Fortune
Suppliers of Streamgarden systems.
http://www.greenfortune.com

Hydro Depot
Offers wide range of items such as equipment, indoor gardening supplies, and accessories.
http://www.hydrodepot.com/

Hydroempire
Equipment and supplies such as complete range of lighting systems, atmosphere control, trays and reservoirs and general products.
http://www.hydroempire.com

American Agriculture
Includes lighting systems, supplies, tools and books.
http://www.americanag.com

Bare Roots Hydro
Hydroponic and organic gardening supplies such as fertilizers, nutrients, and climate controls equipment.
http://www.barerootshydro.com

Texas Hydroponics
Offers a wide variety of indoor and outdoor gardening equipment, parts, publications and accessories.
http://www.texashydroponics.com

MondoGrow
Sells a variety of supplies such as plant nutrients, airshades, grow cabinets and clothing.
http://www.mondogrow.com

Pyraponic Industries
Sells the Phototron automated indoor growing system featuring vertical fluorescent lightbulbs, and a range of supplies and parts.
http://www.phototron.com/

IGS Hydroponics Supplies
Offers lighting systems, greenhouses, nutrients, propagation needs, and other accessories and supplies.
http://www.igshydro.com

Sunburst Hydroponics
Offering indoor gardening supplies, including growlights, nutrients and equipment.
http://www.4hydro.com/

Hydroponic Gardens and Supply
Offering complete kits, systems, and components. Contact details for stores in Delaware and Pennsylvania.
http://www.hydroponicgardensupply.com/