Expanded Shale is a lightweight, porous aggregate that can be used in a hydroponic or aquaponic growing environment. It can also be mixed with the 'black gumbo' soil that is commonly found in the North Texas area to loosen the clay and promote better root growth.
So the search began for the better alternative. Expanded Clay (Hydroton or Leca) was the recommendation. I called all the local supply houses in Utah, nobody carries it or an equivalent expanded clay. I called several national suppliers, they carry it. So checking into having it shipped Utah, no problem just $1,000 dollars for a pallet!!!
Expanded Shale is a lightweight aggregate that is an ideal growing media for hydroponic or aquaponic systems. The shale is mined, crushed and fired under high temperatures in a rotary kiln, producing a clean, inert, porous, and light material.
Expanded Shale is a long lasting soil amendment that is made from clay or shale heated in a rotary kiln until it becomes a light, porous ceramic aggregate. Expanded shale improves soil aeration and drainage; and remains inert in the soil creating long term value.
Norlite is a manufactured lightweight, porous ceramic material produced by expanding and vitrifying select shale in a rotary kiln. The process produces a consistent and predictable high quality ceramic aggregate that is structurally strong, physically stable, durable, environmentally inert, light …
Utelite Lightweight Expanded Shale Aggregates For over 50 years, Utelite Corporation has produced and supplied rotary-kiln, high strength, structural lightweight expanded shale aggregates (ESLA). Expanded shale lightweight aggregates offer exceptional performance and value in a world of applications.
Expanded Shale, Clay and Slate Institute (ESCSI) Established in 1953. 35 East Wacker Drive Suite 850 Chicago, IL 60601 United States of America P: 801-272-7070 F: 312-644-8557. ESCSI is the international trade association for manufacturers of rotary kiln-produced expanded shale, expanded clay and expanded slate lightweight aggregate.