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Hydro Substrates



Expanded clay aggregate (exclay)
25.11.2015
Heated clay-pellets also known under the trademark “Hydroton” or “Hydrokorrels”, or as LECA
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Rock Wool
25.11.2015
Rock wool (or mineral wool) is probably the most common medium of hydroponics. Rock wool is
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Perlite
25.11.2015
Perlite is a volcanic stone that deforms under high temperatures into very lightweight, bloated glass pearls.
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Coconut Fibers
25.11.2015
Coconut fibers, also called coir, is the material that remains after the fibers of the outer coconut shell are removed.
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Vermiculite
25.11.2015
Vermiculite is, like perlite, another mineral that expands through overheating to lightweight pebbles.
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Styrofoam-Flakes
25.11.2015
Styrofoam flakes are affordable, easy to obtain and have excellent drainage abilities. Though, they can be too
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Gravel
25.11.2015
The same kind that is used for aquariums – even though any kind of gravel can be used, as long as
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Brick-Shards
25.11.2015
Brick-shards have similar characteristics like gravel. But they have an additional disadvantage, because
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Sand
25.11.2015
Sand is affordable and easy to obtain. But at the same time it is heavy and
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Wood Fibers
25.11.2015
Wood fibers, which are produced through steam-friction, are an efficient organic substrate for hydroponics.
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