Grodan Delta Rock Wool Plug

Grodan Delta Rock Wool Starter Plugs are fibreglass blocks that serve as a high-performance growing medium, designed for all types of hydroponic crops. NG2.0 is the next-generation technology included in these rock wool blocks that guarantees healthier and more vigorous plants throughout the entire growing cycle.

Grodan Delta

Grodan Delta is one of the most widely used growing media for cannabis by hydroponic growers due to its simplicity, effectiveness and cleanliness. These characteristics give it the ability to scale advanced nutrition programmes to commercial-sized crops.

Its advanced NG2.0 technology improves water distribution and widens the humidity control range (45–78%), guaranteeing uniform root growth and optimising crop development.

This rock wool starter plug is ideal for a wide variety of species and adapts to both hydroponic systems and traditional growing. Its structure of vertical hydrophilic fibres provides excellent root aeration, balancing oxygen and moisture to stimulate constant growth, reduce disease risk and improve nutrient absorption.

Available in two versions, depending on the central hole diameter:

• Small Hole: Ideal for seeds and cuttings in a block of Ø27mm
• Large Hole: Designed for thicker cuttings or transplants, in a block up to Ø40mm

Technical Specifications for Grodan Delta NG2.0 Rock Wool Starter Plugs:

• Manufacturer: Grodan
• Model: Delta NG2.0
• Material: Light rock wool (Basaltic rock)
• Recommended use: Plant propagation and growing
• Water retention capacity: Control range of 45–78%
• Fibre structure: Vertical for better water distribution
• Compatibility: Suitable for hydroponic systems