Gold Label Hydro Clay Pebbles are manufactured using a mix of the best
qualities of pure clay. They are baked in an open furnace using high grade
clean fuels. This guarantees absence of heavy metals or other contaminates.
Gold Label Hydro carries the RHP for Horticulture quality certificate.

Gold Label Hydro is the inert hydroponics substrate of choice for
professionals. The 8-16mm uneven pebbles provide stability and the unique
uneven shape is an ideal surface for roots and beneficial bacteria. The
porous structure has a high water capacity and is suitable for both eb/
flood and top irrigation systems. Gold Label Hydro is also available in sizes
4-8mm and 16-25mm.