Grodan rock wool block (15x15x14.2)

Grodan rock wool block 15x15x14.2cm - Professional substrate for optimal plant growth

The Grodan rock wool block is a high-quality product from the Danish company Grodan, which is highly valued by both professional horticulture and hobby gardeners. With its dimensions of 15x15x14.2cm, it offers an ideal basis for growing from seeds or propagating cuttings.

Special features of the Grodan stone wool block:

• Made from Swedish basalt, melted at approx. 1500°C
• Hydrophilic material through the addition of non-toxic phenolic resin
• Versatile in soil and hydroponics
• With a large and a small hole for flexible use

Areas of application:

• Ideal for seed cultivation
• Perfect for propagation from cuttings
• Can be used in soil and hydroponic systems

Important note for preparation:

Before first use, the rock wool blocks must be prepared:

1. Place the blocks in a pre-buffered solution for 24 hours.
2. Make sure the pH and EC values ​​of the solution are correct.
3. This preparation is important because rock wool naturally has a pH value that is too high.

Advantages of Grodan stone wool:

• Excellent water retention and even distribution
• Optimal ventilation of the roots
• Sterile and free of pathogens
• Reusable in different culture systems

With the Grodan rockwool block 15x15x14.2cm you get a professional substrate that offers you optimal conditions for the cultivation and growth of your plants. Whether you are a beginner or an experienced gardener - this product gives you the flexibility and reliability you need for successful breeding results. Start optimizing your plant cultivation now!