Pargro Rockwool Slab - 36 x 6 x 3-in - 3 Pre-Cut Holes (10x10) - Bagged - Case of 12

Pre-Cut Slab for Even Root-Zone Watering - 36 x 6 x 3 in - Case of 12

Setting up a hydroponic bed is slower when you cut every planting hole by hand. This slab arrives with three pre-cut holes, so you can place plants quickly. Its structured rockwool body supports uniform water distribution and root development across a range of hydroponic systems.

At 36 inches long, this slab suits growers running regular indoor hydroponic setups who want a consistent, ready-to-use medium. It is sold individually, so you can trial it on one bench or order the count your layout needs.

Key Features & Benefits

• 3 pre-cut 10x10 holes — saves cutting time and gives consistent plant placement.
• 36 x 6 x 3-in dimensions — a defined footprint that makes bench layout easy to plan.
• Structured rockwool medium — supports even water distribution and root development.
• Bagged packaging — keeps the slab together for handling and placement.

Who Should Use Pargro Rockwool Slab

Hydroponic growers who want a ready-to-plant medium, from home gardeners with a small system to larger indoor cultivation operations that need consistent slabs.

About Pargro Rockwool Slab

Pargro Rockwool Slab is a bagged rockwool grow medium measuring 36 x 6 x 3 in with three 10x10 pre-cut holes. It is designed for irrigation and nutrient management in hydroponic systems.

Frequently Asked Questions

Q: How many holes does this slab have?
A: It has three pre-cut 10x10 holes. They are set up for planting, so no cutting is needed before use.

Q: What size is the slab?
A: It measures 36 inches long, 6 inches wide and 3 inches high. Check these against your tray or gutter before ordering.

Q: Is it sold as a single slab?
A: Yes, this listing is for one slab, sold each.

Q: What is a rockwool slab?
A: A rockwool slab is a block of spun mineral fibre used as a soilless growing medium. It holds water and nutrient solution around the roots while keeping structure.

Q: Can I use it in different hydroponic systems?
A: It is designed for use across a range of hydroponic systems. Confirm that the slab dimensions fit your specific setup.