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  1. Rubber inspection caps - available in both 4" and 6" depending upon which size chamber you build - also known as "Gem Caps" or "Cleanout Caps" You'll need two per chamber.
  2. 3/4" thread to 1/2" or 3/8" inside diameter barbed adapters - 6" system only.
  3. 1/2" or 3/8" inside diameter polyethylene or PVC sprayline - not used on the 4" system - drilled with one 3/ 32" hole at each occurrence of a grow site ("f") to provide a spray of nutrient solution to each plant. See the previous page to view the fittings necessary for the 4" system. You'll need one assembly per chamber.
  4. Drain fitting - the 6" system requires the use of Atwood (or similar) 1" ID thru-hull fittings - the 4" system requires the use of a smaller fitting made by Forespar (or similar) that measure XX" inside diameter - you can find these at boating stores sold as sink and bilge fittings. They both require a length of snug fitting tubing to be inserted inside them which acts to control the level of nutrient inside the chambers - pictured above fitting.
  5. 3" plastic mesh baskets - these fit snugly into the 2 7/8" holes that represent the grow sites. They are filled with GroRox or similar expanded clay, lava rock or clean large gravel. Your seedlings will be inserted into these cups and backfilled with the GroRox in preparation for planting in the system.
  6. Grow site - a 2 7/8" hole spaced according to the types of crop you plan to grow.
  7. Grow Chamber - can be either 4" or 6" diameter PVC pipe. Six inch is pictured

These last two items are the stand and reservoir. For a reservoir you can use an opaque, heavy duty plastic storage container - the type commonly found in housewares and home improvement stores. The heavier duty, the better, as the weight of one end of the chambers will be resting on it. If you are building the 6" system, try to use the type that are made for storing tools in work trucks and at job sites. Home Depot sells them for about $45 - They're called "Tuff Boxes" - Make sure you remove all metal hardware from this type as it will rust in the acidic nutrient solution.

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