Rockwool (RW)
Rockwool for hoticultural use was invented in Denmark by Grodan in 1969. The product is today used extensively world wide. In North America the majority of greenhouse vegetables are grown in Grodan. Stonewool absorbs moisture without holding nutrients, and even when it is completely saturated still retains 20% air for your plants root system. Stonewool products are made from basalt rocks and chalk, which come from the Earth. Mimicking Mother Nature’s production of "angel hair" during volcanic activity, the Grodan stonewool manufacturer heats rocks to 1600°C, to create lava. The lava is blown into a spinning chamber, which makes fibers similar to cotton candy. The fibers are packed into mats, from which Grodan cubes, blocks and slabs are cut. Small tufts of fibers are also produced and bagged as "rockwool granulate". The products make excellent use of natural resources: one cubic yard of rock becomes 37 cubic feet of wool!

L.E.C.A.
L.E.C.A stands for Light Expanded Clay Aggregate and is made by baking pure natural clay at 1200 degrees Celsius for 3 hours to create a porous growing medium. Due to the neutral nature (no acid or base/alkaline qualities) of L.E.C.A, along with other properties it is perfect for growing plants, especially indoor plants in hydroponics. L.E.C.A provides an ideal balance of moisture, food and air to your plants. Capillary action on the surface of the lightweight pebbles wicks nutrient solution to the root systems of your plants. Root rot is eliminated due to the space between the pebbles allowing all-important oxygen to get to the roots. L.E.C.A. is often the growing medium of choice of novices and professionals alike.

Perlite/ Vermiculite mix
Perlite and vermiculite have been used for years to amend professional potting soils made from peat moss (called "soilless" mixes or artificial soils because they literally contain no soil) Essentially perlite and vermiculite are used in the horticultural industry because they both provide aeration and drainage, they can retain and hold substantial amounts of water and later release it as needed, they are sterile and free from diseases, they have a fairly neutral pH (especially perlite which is neutral), and they are readily available, non-toxic, safe to use, and relatively inexpensive. As a rule of thumb, perlite tends to last longer, has a more neutral pH, and functions much better in hydroponics, outdoor applications, lawns and gardens (in part because it is stronger). A 50-50 mix of perlite and vermiculite has been found to be a very good hydroponic growing medium..

.Coconut Fiber
This is a major step forward in hydroponic media technology. This is the first "organic" medium which offers top-performance in modern hydroponic applications. Coconut fiber offers many unique advantages - it maintains a larger oxygen capacity than the finest rockwool.Coconut fiber is also very high in naturally occuring rooting hormones. It offers superior water holding capacity to rockwool, a real advantage for intermittent irrigation systems.Coconut fiber is not a biohazard or disposal problem like rockwool - it is completely natural and not environmentally aggressive as rockwool is.Coconut fiber contains organic compounds which other hydroponic media lack. Dutch growers are finding that by blending a mix of 50% coconut fiber with 50% Grorox clay pebbles they achieve the perfect organic-hydroponic media. This blend is rapidly gaining favor with the biggest Dutch growers when used in Dutch Pots - a simple but powerful technology.

Oasis Media

The innovative formula of Oasis Media eliminates the necessity of leaching before use. Excellant for use in all types of propagation,including seeds and cuttings/clones. Since its pH is in the proper range, thorough watering before use is all that is needed to have it ready for propagation. The uniform cell structure of Oasis Rootcubes assures proper drainage and water holding capacity for optimum air/water balance for your clones. The modest cation exchange capability of Rootcubes helps control availability of grower applied fertilizer. Available in a variety of different sizes, these professional foam propagation products offer an excellent pH corrected alternative to rockwool as a rooting media.