Begrow Stone Wool Slab - 6 x 36 x 4-in - 16 Count

Rigid, Porous Root Support for Hydroponic Rows - 16 Slabs

Hydroponic growers need a medium that holds its shape, wets through quickly and leaves air around the roots. These stone wool slabs are made from randomly arranged fibers, which gives a rigid structure and high porosity. The distributor lists porosity above 95% and full immersion in water in under 25 seconds.

Each unit contains 16 slabs, each 6 x 36 x 4 in. That quantity suits a grower filling several rows in a greenhouse or indoor room, and a home grower can split it across multiple seasons of trials or a larger system.

Key Features & Benefits

• Stone wool material — a rigid, fibrous medium for root development in hydroponic systems.
• Porosity above 95% — leaves room for air and water around the roots.
• Fast wetting — full immersion in water takes under 25 seconds.
• Recovery above 98% at 6 kPa — the slab springs back after light pressure.
• 16 slabs per unit — enough to outfit multiple rows in one order.

Who Should Use Begrow Stone Wool Slabs

Growers running hydroponic systems in greenhouses or indoor rooms, from home gardeners to commercial operations, who want a consistent, rigid medium for vegetative growth and flowering.

About Begrow Stone Wool Slabs

Begrow stone wool slabs measure 6 x 36 x 4 in. The distributor lists an average fiber diameter of 6 µm, density of 70-80 kg/m³ (±10%), organic matter of 1-4% and a chaotic fiber structure. The recommended relative humidity is 40-85%.

Frequently Asked Questions

Q: What size are these slabs?
A: Each slab measures 6 in wide, 36 in long and 4 in high. One unit contains 16 slabs.

Q: What is porosity?
A: Porosity is the share of a medium's volume that is open space rather than material. The distributor lists this slab above 95%, so most of its volume can hold air and water.

Q: How quickly does it wet?
A: The distributor lists full immersion in water in under 25 seconds. Even wetting helps you start irrigation on a predictable schedule.

Q: What does recovery level mean?
A: Recovery level describes how well the slab returns to its shape after pressure. This slab lists over 98% at 6 kPa.

Q: Is it suitable for hydroponic systems?
A: Yes. It is a stone wool medium intended for root development under hydroponic conditions.