PRODUCT OF EXCEPTIONAL QUALITY: Hydrocorn (GOLD LABEL) Hydrocorn (clay pebbles) with the Gold Label are made from a combination of the highest quality pure clays and are baked in an open furnace using high grade clean fuels, ensuring that they contain no heavy metals or other contaminates.
The RHP for horticulture quality is proudly displayed on Gold Label Hydrocorn. Professionals use Gold Label Hydrocorn because it is an inert substrate for hydroponics.
Stability is provided by the 8-16mm size range, and the irregular shape of the pebble makes for a great surface for roots and good bacteria.
The porous construction can be used for either ebb and flood or top irrigation due to its high water capacity.
To learn more, view the Gold Label Feeding Guide.