How-To Hydroponics 4th Edition is available online:

• Amazon.com
• Backwoods Home Magazine
• Barnes & Noble
• Countryside & Small Stock Journal Magazine
• Lindsay's Technical Books
• The Growing Edge Website

Futuregarden Brand Nutrients, Mediums, Hydroponic & Container gardening systems, as well as How-To Hydroponics 4^th addition are available at:

• Akron Garden Center - 1749 South Main St.
  Akron, Ohio 44301 (330) 724-2700

• Brew and Grow - 8179 University Ave
  Fridley, MN 55432 (763) 780-8191

• Cleveland Garden Center - 727 E 185th St.
  Cleveland, OH 44119 (216)481-7868

• Get R Growin' Hydroponics - 1350 Sangamore St.
  Hayward, CA 94545 (510)732-6707

• Green Thumb - 1230 Rutherford Rd.
  Greenville, SC 29609 (864)271-8830

• The Happy Gardener - 12084 Meriturn Place
  Ashland, VA 23005 (804)798-9280

• Healthcrafts - 2747 Pacific Ave., SE
  Olympia, WA 98501 (360)705-0965

• Herb-N-Garden Center - 14901 Puritas Ave.
  Cleveland, OH 44135 (216)252-2001

• Kelvin Educational - 280 Adams Blvd.
  Farmingdale, NY 11735 (631)756-1750

• Meadowview Feed and Garden - 1202 Meadowview Road
  Pasadena, MD 21122 (443)817-0018

• Lazy Gardener - 14626 E. Whittier Blvd.
  Whittier, CA 90605 (562) 945-0909

• Progressive Gardens - 5725 Oleander Drive, Unit E6
  Wilmington, NC 28403 (910) 395-1156

• Techno-Gro, LLC - 333 Jefferson Street
  Sterling, MI 48659 (989) 654-2658

• Technimark, Inc., - 720 Industrial Drive Suite 111
  Cary, IL 60013 (847) 639-4700

• Water-wise Gardens - 2995 Carnegie Drive
  Boulder, CO 80305 (303) 588-7867

• Wolfcreek Farm - 3175 Scrubgrass Road
  Grove City, PA 16127 (814) 786-7675

• Urban Garden Designs - 153 E. Richmond Street
  Philadelphia, PA 19125 (215) 425-2152