What is the difference between Lava Rocks and ordinary pumice?
There are two differences. • First, Lava Rocks have a pH of 7.0. This means they are completely neutral. Most other pumices are acidic to varying degrees. • Second, Lava Rocks have undergone a unique refining and purification process. What is the difference between Lava Rocks and expanded clay pellets? The important difference between Lava Rocks and expanded clay pellets is in the way they handle mineral salt accumulation. Soluble salts in the water attach to individual molecules of clay. As a consequence, clay pellets become salt laden quickly and need to be continually rinsed and flushed. Does water in the Lava Rocks reservoir beneath a plant become stagnant? No. Lava Rocks are constantly moving water upwards via capillary flow. Water does not remain still and stagnate. Do the roots rot? No. Sufficient air is always readily available to the roots so they are not subject to rot. Do the roots receive an adequate supply of oxygen and other gases? Yes. Lava Rocks allow the roots access t
