- 64x Cultiwool 6" x 6" x 4" Growing Blocks
Cultiwool 6" x 6" x 4" Growing Blocks (64 Blocks/Case)
starting from 0% interest financing from
/mo.
- 64 blocks per case providing uniform fibre density for predictable water retention.
- Donut Ring technology ensures precise dripper placement and even nutrient distribution.
- 6x6x4 inch dimensions accommodate large root systems for mature plant stages.
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Commercial & Bulk Purchasing
We support operations & licensed facilities with volume pricing, dedicated account managers, and custom equipment consultation.
Who This Is For
- You are moving to a larger media block because your current cubes dry out too fast during the peak of the cycle.
- You are switching to foiled blocks because light hitting the media surface is causing algae buildup in your trays.
What We Found
- The donut ring at the top keeps dripper stakes exactly where you want them even during high pressure cycles.
- The bottom grooves are deep enough to keep water moving without needing to add extra layers of drainage mesh.
What Users Say
- Users who switched to the Optidrain design say they stopped finding stagnant water pooling under their largest plants.
- Buyers report that the consistent water absorption helps them automate irrigation without checking every pot by hand.
Cultiwool 6" x 6" x 4" Growing Blocks (64 Blocks/Case)
Tired of inconsistent moisture levels and poor drainage sabotaging your hydroponic garden? The Cultiwool 6" x 6" x 4" Growing Blocks are engineered to solve these exact problems, providing a stable and reliable foundation for explosive plant growth. Made from premium European stonewool, these blocks ensure uniform water absorption and distribution, eliminating dry spots and preventing waterlogging.
Each block is designed for superior performance, featuring innovative Donut Ring technology for perfect dripper placement and Optidrain grooves for enhanced drainage. This advanced system promotes a healthy, oxygen-rich root zone, minimizing the risk of disease. The black and white foil wrapping prevents algae growth while maintaining optimal light conditions for your plants. These blocks are perfectly compatible with smaller starter media like the Cultiwool 1.5" cubes, creating a seamless transition from seedling to mature plant. For different stages or plant sizes, the Cultiwool line also includes options like the more compact 4" x 4" x 4" blocks.
What's Included
Features
💧
Donut Ring Technology
Industry-first water chamber ensures precise dripper placement and uniform water distribution.
🌿
Optidrain Performance
Advanced drainage system creates an optimal root zone, preventing waterlogging and boosting plant health.
🛡️
Protective Grooves
Bottom grooves improve water flow and reduce ground contact, minimizing the risk of root pathogens.
☀️
Algae Prevention
Black and white foil wrapping blocks light to prevent algae growth and maintain a clean environment.
🌍
Premium European Stonewool
Provides a sterile, high-quality, and consistent growing medium for reliable results every time.
📏
Versatile Size
The 6" x 6" x 4" dimensions offer ample space for developing robust root systems for larger plants.
Cultiwool 6" x 6" x 4" Growing Blocks w/ Optidrain Specifications
| Specification | Value |
|---|---|
| Material | Premium Stonewool |
| Dimensions | 6" x 6" x 4" (150mm x 150mm x 98mm) |
| Plug Hole Size | 38mm / 40mm |
| Quantity per Case | 64 Blocks |
| Special Features | Optidrain, Donut Ring, Drainage Grooves, Black/White Foil |
| Selling Unit | Case Only |
FAQs
What are Cultiwool blocks made of?
Cultiwool blocks are crafted from high-quality, premium-grade European stonewool (also known as rockwool). This material is inert, sterile, and provides a perfect air-to-water ratio for healthy root development in hydroponic systems.
Do I need to prepare the blocks before use?
Yes, it is essential to pre-soak and condition the stonewool blocks before use. This involves soaking them in pH-adjusted water (typically between 5.5 and 6.0) for up to 24 hours to stabilize the pH and ensure they are fully saturated for your plants.
What is the benefit of the Donut Ring and Optidrain features?
These features provide superior water management. The Donut Ring ensures your dripper is placed perfectly for even water distribution throughout the block. The Optidrain grooves at the bottom enhance drainage, preventing waterlogging and ensuring the roots have access to plenty of oxygen, which is crucial for vigorous growth.
What size starter plug can I use with these blocks?
These blocks have a 38/40mm plug hole, making them perfectly compatible with most standard starter plugs, including the popular Cultiwool 1.5" cubes for a seamless transplanting process.
Do you offer other sizes of Cultiwool blocks?
Yes, we carry a range of sizes to suit various plants and systems. For plants that require more vertical root space, the Cultiwool 6" x 6" x 6" blocks are an excellent choice. We also have smaller options for more compact setups.
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Questions About This Product?
Our specialists are happy to help. Call us or send a message and we'll get back to you within one business day (most of the time within a few hours.)
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