Coconut coir bricks are composed of 3 different types of compressed coconut coir. This high quality， low sodium growing medium is an environmentally friendly alternative to sphagnum peat moss. When hydrated with water， bricks and blocks rapidly expand which saves you time and effort. They can be exclusively used by themselves， blended together or mixed with expanded clay pellets， perlite or vermiculite or topsoil. The brick will break down on its own in 3-years. Better still， you can run it through a chipper and amend your soil with it. Incredibly strong， it makes a better candidate for use with enzyme products that convert roots to biomass. Each brick makes up to 18 Gal. (72 qt.， 2.5 cu. ft.， 68 l) of ready-to-use soilless media.
Optimum air to water ratio
Increases nutrient retention and provides essential aeration
Expands to 5 times its packaged size
Great for outdoor gardening
100% organic coir fiber
Flushed of excess sodium
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