Trough Liner And Construction
The original liner material for the troughs that we used in our first systems in 2007 (which is already approved for organic certification by Oregon Tilth) is a 23-mil, 3-layer, 15-year laminated LDPE material made by Inland Plastics, Ltd., in Chicago, called P2000. Their phone # is 815-933-3500, or 800-387-7765. Unfortunately, this liner only comes in 750-foot rolls 12 feet wide, which weigh about 800 lbs. each and cost about $3,500 with shipping. Oregon Tilth certified our systems organic with THIS LINER, and Organic Certifiers has certified both this liner and the one in the following paragraph. Be certain your certifying agency has approved the liner you intend to use before you buy a huge useless roll of it and then find you can’t get certified.
A liner we like better, AND have been using for all our new systems for the last seven years is Dura-Skrim R20WW by Raven Industries (www.dura-skrim.com, PO Box 5107, Sioux Falls, SD 57117-5107). This is a tough, 20-mil laminated LDPE plastic film that comes in 6-foot-wide rolls, and seems to perform better than the P2000.
Your contact for large orders (over 500 linear feet), is Courtney Mendelson, Account Sales Service Representative, Raven Industries – Engineered Films Division, Phone: 800-635-3456, Fax: (605) 331-0333.). Don’t bother her for orders smaller than 500 lineal feet, please! (info next).
Purchase smaller orders from: Randy Campbell, 256-679=9488; [email protected], AND Global Plastics (http://www.globalplasticsheeting.com/aquaponics-plastic-film/, AND from IWT CargoGuard: http://iwtcargoguard.com/, 609-971-8810.