Pure Slab Professional Rhiza 12L – 2,6kg

A grow bag of loose, coarse coir substrate enriched with endomycorrhizae which facilitates a better uptake of nutrients. As this product has never been compressed it has extra aereation properties and balanced water retention properties. 12 liters of coconut substrate.

Product details

  • High quality coconut substrate made in India.
  • Coconut substrate, free of soil pathogens, odours, roots and any other impurities.
  • Washed in clean, salt-free water.
  • A plant-based product for indoor and outdoor use.
  • True-buffered.
Dry matter


Organic matter

in % of dry matter


Water holding capacity






< 0.6 ms/cm

Chlorine (Cl)

70-80 mg/L


12 L

Net Weight


2.6 kg

All parameters correspond to the moment of packaging.
Use fertilizer as required. Store in a cool and dry place.

  • ECO An earth-friendly plant-based product.
  • SUSTAINABLE Provides environmental, social and economic benefits.
  • PEAT-FREE – Protecting global wetland peatland areas.
  • COCONUT – A 100% coconut shell by-product.
  • EC & PH – Optimal EC & pH levels.
  • WATER RETENTION – Coir has a fibrous texture which provides the best water holding capacity for plant roots.
  • AIR PROPERTIES – Excellent aeration properties.
  • EASY GROWING – Easy to use and easy to grow.
  • CO2 A plant-based by-product which offsets and reduces carbon dioxide emissions.
  • KOGuarantee A quality control compliance guarantee.

User guide

UGro Slab is a peat-free, eco, sustainable coconut substrate with low EC levels and minimum nutrients. It is packed into a large slab in plastic wrapping which is easy to use and easy to reposition. The bag has been treated for excellent UV stability.

  • What you will need: UGro Slab, x4 UGro Cube Rhiza, scissors, clean water, root stimulator and fertiliser.
  • There are four cubes marked for cutting on the top of the Slab and drainage holes underneath the Slab.
  • We highly recommend adding root stimulator and fertiliser (only add half of the manufacturer’s recommended dose).
  • To avoid planting and nutrient issues you must check that the pH of the solution is adjusted to 6.
  • Cut the remaining drainage holes in the base of the Slab, prior to cutting the top cubes.
  • On the top of the Slab, cut out the remaining hole for UGro Cube Rhiza to sit on.
  • Now place your plants (or Cubes) on top of the planting holes, on the top the Slab.
  • The roots will now spread across, allowing the plants to absorb the nutrients.