Grodan Delta 6.5G Rockwool Cube 100×100×60

The perfect cube for strong roots & clean seedling development.

The Grodan Delta 6.5G is a high-quality rockwool cube,
developed for professional cloning, vegetative, and training phases.
It offers an extremely stable structure, optimal air-to-water balance,
and promotes rapid, clean root formation.

Perfect for soil, hydro, coco, or fully hydroponic systems.

Woodpecker’s Key Facts

📏 Dimensions: 100 × 100 × 60 mm

🌱 Delta 6.5G – Standard size for training & early vegetative stage

🧱 High-quality rockwool from Grodan

💨 Optimal air/water ratio for explosive root development

🌊 Even moisture distribution throughout the block

🔄 Ideal for hydro, aero, NFT & soil/coco grows

🌞 Sterile, pest-free & easy to handle

🧪 pH-stable & easily adjustable

Benefits for your plants

extremely fast rooting

controlled growth from day 1

perfect propagation for strong, compact plants

ideal for training (topping, LST, early transplanting)

even oxygen supply

Application

1. Pre-condition rockwool in pH-regulated water (pH ~5.5)

2. Gently squeeze out excess water

3. Insert seed or cutting

4. Maintain consistent moisture

5. After root development → repot or place into the system

Ideal for

Cuttings & seedlings

Pre-growing before potting

Hydroponics, Aeroponics & NFT systems

Precise plant training

Growers who want clean & controlled development

Woodpecker’s Verdict

The Grodan Delta 6.5G is an absolute standard in professional cultivation.
Fast roots, stable structure, perfect moisture –
this little cube is a bloody powerhouse.

Woodpecker approved. 🌱🔥🦜