HydRocksTM is produced by fully calcining clay at temperatures in excess of 2000 degrees Fahrenheit. This inert, ceramic material is available in a variety of particle sizes - Fine, Medium and Coarse.
FINES=> 1/8" - 0
Intermediates=> 3/8" - 3/16"
Coarse=> 5/8" - 3/8"
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SOIL INCORPORATION HydRocks is an ideal amendment for raised beds used for the production of roses and other ornamental plants. When incorporated at a rate of 15 to 25% by volume, it improves drainage and aeration, promoting plant growth. HydRocksTM is also an ideal medium for hydroponic production systems.
LIGHT WEIGHT The bulk density of HydRocks is much lower than that of soil, sand and many types of soil amendments - a definite advantage during transportation, handling and installation. Yet it is strong and durable - providing long-term aeration in potting mixes and rooting media.
NEUTRAL pH HydRocks will not release carbonates or other chemicals that affect the pH of potting mixes. It is chemically stable, but can be treated with chemical supplements to meet the pH requirements of a particular application.
CHEMICALLY INERT Because HydRocks has been fully calcined at temperatures in excess of + 2000 degrees Fahrenheit, it is a ceramic material. It will not compress, decompose, or react with agricultural or horticultural chemicals. HydRocksTM has a low cation exchange capacity.
NO SHRINKAGE HydRocks is completely inorganic, and will not decompose like organic materials such as peat, sawdust, composts and bark. HydRocks maintains its porosity, providing superior aeration for optimum plant growth and healthy root structure. Added to soil mixtures at a rate of 10% to 20% by volume, HydRocks prevents soil compaction and promotes root growth.
COLOR Because of its natural color, HydRocks blends well with other soil materials. It also makes excellent mulch particularly in high traffic areas.
MOISTURE RETENTION HydRocks allows free drainage, but also absorbs up to 30% of its weight in water and water born nutrients. Water and nutrients are slowly and steadily released as the soil dries. HydRocksTM particles will not float up or sink out of a blended medium.