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Hydroponic Growing Mediums

There are a couple of things to consider when choosing a growing medium, they are drainage properties, water retention and system compatibility. Matching your growing medium to your hydroponic system is ultimately important for optimum conditions around the roots.  When these conditions are maintained, they’ll allow your garden to flourish. 

What makes a good medium?

-Should retain moisture well to keep the roots moist at all time. -Good drainage is a must, as water build-up can damage the roots and provide a breeding ground for disease. -The medium should have a relatively neutral pH and buffer well when changing. -Should be easy to clean, environmentally friendly and reusable. -Resistance to fungal infections is also an advantage, as they are sometimes hard to eliminate in the growing stages.  

Mixing Mediums

To obtain the perfect water to air ratio, hydroponic growers often mix growing mediums. Vermiculite and Perlite is commonly mixed together in a 50/50 ratio, because the two complement each other perfectly. Coconut Coir is also commonly mixed with a medium with higher drainage values such as Perlite or LECA (lightweight expanded clay aggregate). The coconut fibers resilience to fungal growth makes it an excellent growing mix.
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