Vermiculite nº 2 in 7L and100L
Vermiculite is able to absorb up to 5 times its weight, this is why it is a good product for substrate mixtures and to add moisture.
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Vermiculite for Retaining Humidity in Substrates
Vermiculite Nº2 Properties
Vermiculite nº2 has different uses in the cultivation of marijuana. It is sort of expanded clay but not as hard that retains water up to 5 times its weight; therefore, if we add some vermiculite, it will be no problem to moist peats again –e.g. Canna Terra Professional- that are difficult to wet after they get dry. Other substrates that absorb better, as All-Mix by Biobizz, many not need to add them since they retain moisture far more.
Vermiculite N°2 Properties
If you mix it with soil do not exceed 5% the pot volume or you may have serious problems of humidity in the substrate, water excess and root rottenness due to a lack of oxygen; therefore, growbarato.net recommends 2%.
Vermiculite nº 2 is also very much used in hydroponic systems as an inert substrate and similarly to the use of clay pebbles. This product is available in 7l bags or 100l sacks.