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The Cultiwool Rockwool Slab is a growing method where the cuttings are directly planted in the slab, made of cushioned rockwool fibers. This allows for air and water circulation, providing a perfect habitat for hydroponic grows.

This is a professional-grade product that enables growers to achieve high-yield and high-performance results.

Measuring 100 cm x 15 cm x 7.5 cm, around 3 – 5 cuttings per slab can be planted.

A box of 16 units, not sold separately.


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Uses and Specifications

The Cultiwool Rockwool Slab is a fantastic solution for growers specialized in hydroponic grows.

Hydroponics is a  method that does not use substrate or soil, instead, it involves growing plants in baskets of inert materials like coconut fiber, arlite or rockwool. "Inert" means the base will not provide nutrients to the strains and they must be added in the water.

These rockwool slabs are designed to provide a uniform and stable environment so that roots can develop their full potential. It's a fantastic option for growers who want to maximize their yield and streamline their process.

If you want to reuse the slabs, it's recommended to water before planting again with cannaflush.


  • Easy to use.
  • Especially formulated for hydroponic cultivation.
  • It does not stain.
  • 3 - 5 cuttings per sheet.
  • Larger, healthier plants.
  • Higher yields.
  • Inert, stable, and uniform.
  • After the harvest, it can be reused endlessly.
  • Dimensions: 100cm x 15cm x 7.5cm
  • Sold in boxes of 16 units.

This product is not sold by the unit. Full box of 16 units only.

Attention: Shipping companies charge based on two parameters: weight and volumetric measurements.

The volumetric weight is obtained by multiplying the product dimensions in centimeters divided by 5000.

Some products like dishes, reflectors, trays, etc. can be stacked and allow you to reduce the volumetric rate.

  • It's recommended to choose the preset amounts as they contain the exact rates of the stacked products.
  • If more than the preset amount is needed, you can reach out via email to get information on the respective shipping rates to optimize the shipping cost.

La Huerta's Opinion

The Cultiwool Rockwool Slab is an excellent medium for growers using a hydroponic system.

It's advisable to soak the slabs with an EC solutiion of 1.5 to 2.5 mS/cm and a pH of 5.5 to 5.8; ensuring no dry spots to prevent irregular plant growth. Be careful not to overfeed the strains and monitor both humidity and pH levels to achieve the desired results.

This can be recommended for growers specialized in hydroponics and those just starting in this field. Find more materials for hydroponic growing here, at La Huerta Grow Shop.

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