Product Brochure

100% Recycled. 100% American Made.
Aeration and Drainage
Growstones highly porous
and uneven shaped
aggregates provide a
balanced combination
of small pores inside
each aggregate and
large pore spaces
between aggregates. This
determines Growstones
capacity to store water,
air, and the ability to
provide them to the plants.
What’s truly unique about Growstones is the
combination of pore size distribution and pore
interconnectivity. Pore interconnectivity results in a large
surface area available for roots to grow in and around.
While larger pores between aggregates assure rapid
drainage and air exchanges, which guarantees oxygen is
rapidly dissolved in the water and supplied to the roots,
small pores are filled with fresh air and covered by a film
of oxygen-saturated water. As a result, after irrigation,
each pore acts as a ‘micro NFT system’.
The combination of small and large pore spaces creates
an ideal environment for roots, microorganisms, and
worms to thrive—full of oxygen-rich water, and nutrients.
Water retention
Growstones can hold up
to 30% of its volume in
water after irrigation.
Its pore size and
interconnectivity also
facilitates horizontal
water diusion leading
to uniform moisture
distribution, which in
turn induces uniform
root growth, allowing
you to take advantage
of the entire volume of
growing medium.
Capillary Action
Growstones pore size and
connectivity results in good
wicking ability. Growstones
absorb and retain moisture four
inches above the water level.
This wicking ability has multiple
advantages, all associated with
creating a constant moist and
highly aerated environment for
roots above the water level. These
conditions promote continuous
development of hairy roots, which
considerably increase the absorption area of the root
system. Growstones wicking ability also has practical
implications on growing. With Growstones, in flood-
drain tables, the water level need only to be raised up to
two to three inches below the surface of the medium.
The upper layer of Growstones will keep moist and filled
with air. This eliminates the possibility of excess moisture
at the surface of the medium, reducing chances for
fungus gnat infestations and algae growth.
Easy root zone control —
High steerability
Growstones drier nature
in comparison to other
growing media has
multiple advantages. It
makes it easier to change
root zone nutrients, pH
and moisture levels as
quickly as desired. As a
result, with Growstones,
it is easy to transition your
plants from vegetative to bloom.
Frequent feedings with no risk of root rot and
fungal diseases.
Growstones drier nature also allows taking advantage
of frequent feedings with no risk of overwatering or root
rot, and it reduces the plant’s susceptibility to Pythium
and other fungal diseases.
Silica release
Because Growstones are
made from recycled glass,
its surface leaches out silica
in a form roots can uptake—
monosilicic acid (H4SiO4).
Plants that accumulate silica
have higher resistance to
stresses such as drought,
salinity heavy metals, and
pathogens.
Lightweight
Growstones are super lightweight with a bulk density
of 0.20 g per cc.
Versatile
Great fit for Hydroponics, Aerator in ‘soil’ blends,
Bonsai blends, Aquaponics, Green Roofs, and more.
Made from recycled glass. Made in USA.
GROWSTONE 101:
Everything You Need to Know About Growstones
Growstones are breakthrough, high-performance growing mediums that are made
from 100% recycled glass and 100% American made.
www.growstone.com