The rockwool grow slabs industry has seen a number of breakthroughs over the years, but the first major breakthrough came in the early 1990s. At this time, a company called Grodan, based in the Netherlands, developed a new type of rockwool grow slab that was specifically designed for hydroponic growing. This new type of rockwool grow slab was made from a combination of basalt and chalk, and it was designed to be lightweight, durable, and highly absorbent.

The new rockwool grow slabs were an instant hit with hydroponic growers, as they provided an ideal medium for growing plants in a hydroponic system. The slabs were able to absorb and retain moisture, while also providing excellent drainage and aeration. This allowed for optimal root growth and nutrient uptake, resulting in healthier and more productive plants.

The success of the new rockwool grow slabs led to a surge in demand for the product, and UPuper quickly became the leading supplier of rockwool grow slabs in the world. The company continued to innovate and develop new products, such as rockwool cubes and blocks, which further increased the popularity of the product.

Today, rockwool grow slabs are used in a variety of hydroponic systems, from small home systems to large commercial operations. The slabs are also used in soil-based systems, as they provide excellent drainage and aeration, while also helping to retain moisture.

The success of the rockwool grow slabs industry has led to a number of other breakthroughs, such as the development of new types of rockwool, such as expanded clay and perlite. These new materials have allowed for even better drainage and aeration, while also providing better insulation and temperature control.

The rockwool grow slabs industry has also seen a number of other innovations, such as the development of new types of hydroponic systems, such as aeroponics and aquaponics. These systems have allowed for even more efficient and productive growing, while also reducing the amount of water and energy needed to maintain the system.

The rockwool grow slabs industry has come a long way since its first breakthrough in the early 1990s, and it continues to evolve and innovate to this day. The industry has seen a number of other breakthroughs, such as the development of new types of rockwool, new hydroponic systems, and new methods of growing. As the industry continues to evolve, it is likely that even more breakthroughs will be made in the future.