All Expanded Clay is not the same! BALLS are made with only the highest quality clay, producing a media that is uniform, stable and low in inherent E.C, meaning you get the best outcomes from your plants. Available in various sizes including new JUMBO, BALLS are the next generation in the media you have come to know and love. If you want to grow the biggest and the best, then you gotta have BALLS!Special kiln-fired Clay Pebble Grow Rocks, lightweight aggregate that is super-heated and formed into pebbles 16 plus mm in size.The ceramic shell and inner pore structure retains moisture and releases it back to your plant’s roots as needed. Grow rocks will not compact, ensuring excellent aeration for the life of your plant. It is reusable and lasts indefinitely, making it a great value. Grow rocks are excellent in hydroponic systems.
Additional Qualities:Superior water-storing propertiesPure, mineral, without fibers or solventsCoarse-pored and aerated expanded clayNon-slip, stable in structure and non-compactingDrainage, filter and vegetation layer all in oneOffers excellent evaporation protection as a top layerCan be mixed with all known growing mediumsCan be used with all current hydroponic systemsAbsolutely odourless and plant friendlyLighter than lava, gravel or similar materialsDoes not rotMany Applications - Also available in 8 - 16 mm size and 30 mm Round and Elongated