Speedgrow are natural products made from the volcanic clotting rock (solidification of lava) Basalt. The fibers are made by heating this rock, a specialty of the manufacturer! The so-called Ecose Technology uses formaldehyde free binder. This sustainable technique is particularly environmentally friendly. In this way, the desired structure develops and we produce a product with healthy fibers. The major advantage of this is that the roots are not resistant to growth and are therefore better resistant to diseases and pests. The plants also make more use of the available volume. - Organic binder - Better rooting - Sustainable - Excellent growth performance - Better for the environment - No skin irritation Speedgrow 84 and Speedgrow 126, A true natural product made of basalt volcanic clotting rock. The so-called Ecose Technology uses formaldehyde free binder. This sustainable technique is particularly environmentally friendly. Therefore the color of these products is brown. Speedgrow use: - Watering under the tap is actually enough. Due to the Ecose, speedgrow products already have a small EC increase, which makes foodstuffs in the first week unnecessary.