13.6Kg Premium Floc - Rockwool Growing Medium Plant Fruit Flower Growool
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13.6Kg Premium Floc - Rockwool Growing Medium Plant Fruit Flower Growool
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Growool has a unique combination of properties which make it an excellent growing medium. These properties need to be considered if the material is to be used to its maximum effectiveness.
Properties:
Very light when dry, with a void space of 95%
Natural rock and is not biodegradable
Sterile when packed
Inorganic and contains no nutrients
Very low cation exchange capacity, so will not bind nutrients
A slight pH rise on initial wetting, after which it has no influence on pH and nutrient solution it contains
High water and air holding capacity, typically 70% water and 25% air.
The aeration of this media can be influenced by the height of the Growool and how tightly it has been packed into the container.






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