Aquaponic system kit has the components required to build a complete Three Barrel system. You supply the food grade barreLS. Includes: Instructions, plumbing, airlift column assembly, air pump with air diffusers, filter mat
Digital TapWater Tour, Classroom investigation of how and why the characteristics of tap water can vary and affect everyday activities, Background information, test materials included for pH, chlorine, hardness, copper, iron, With Instructor, Student Manuals
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