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Cultiwool 6 x 6 x 4 Inch Blocks | Bulk Pallet – 1280 Pcs.






Cultilene 6″ blocks provide a high-quality rockwool alternative for hydroponic and indoor cultivation. The 6″ Cultiwool cubes are a good size for transition planting or finishing small plants, and they feature a standard-size rockwool macro-plug cutout for easy transplanting of seedling starts. We offer these 6″ rockwool blocks for sale individually so you can purchase the right amount to fit your needs. Comes in a bulk pallet of (1280) 6″ x 6″ x 4″ blocks for commercial growers.

  • Quantity – 20 cases | 1280 individual blocks
  • Blocks measure 6″x6″x4″
  • Low-density fiber with firm support
  • Macro-plug cutout
Your Garden's Success is our #1 Priority

HTG Supply is committed to providing you with the very best products, pricing and service in the industry. We will ship your order fast and discreetly packaged to protect your privacy. Buy with confidence knowing your HTG Supply purchase includes simple returns as well as lifetime product support. Call our team of real growing experts with your purchasing or product use questions, and we will be here to help!

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Customer Service:  1-866-710-GROW (4769) | [email protected] | Hours: Mon-Fri 9:00 a.m. to 5:00 p.m.


Cultilene 6″x 6″ x 4″ Cultiwool Blocks | Pallet of 1,280 Pcs.

A homogeneous and reliable stone wool substrate to grow a healthy and vigorous crop. That is what Cultiwool stands for. The Cultiwool substrate, available in various types and sizes, is distinguished by a strong water-absorbing capacity, uniform water distribution in the block, and better water flow under the substrate. Plus, the products are offered at competitive prices.

Cultiwool helps you and your plants grow. They do this by combining European quality, innovation, and knowledge in a complete range. Focusing on stone wool products of the highest quality with an eye for the smallest detail, but strength lies in collaboration with specialized partners in the field of technology and advice. Benefit from the flexibility and drive of a start-up in combination with the knowledge, skills, and experience of a leader. All in one, together for your success.

Growing Blocks:

Cultiwools’ growing blocks are unique in the most efficient way. That has everything to do with the consistency of Cultiwool’s products. Quick and easy uptake of water and the homogeneous distribution of water throughout the substrate is one of the most important features of a growing medium.


Uniformity A homogeneous stone wool product is essential for unrestricted and regular root growth. Cultiwool stonewool produced in Europe is the highest quality stonewool in the market for hydroponic systems. Stonewool used in Cultiwool is certified by RHP. Therefore Cultiwool offers maximum uniformity to optimally control water and nutrient application. The result is a uniform crop that will result in higher yields, better quality, and less energy usage.

Fast uptake of water Reliable initial saturation is key to avoiding dry spots in the substrate. Dry spots will create salt buildup which results in an unbalanced block and should be avoided at all times. Cultiwool substrates have a faster and easier water uptake due to the high quality of stonewool. This explains why stonewool used in Cultiwool is the only stonewool board in the highest category of RHP related to initial wetting-up.

Total control Water, EC, and pH distribution can be very well controlled with Cultiwool rock wool substrates, both vegetative and generative, depending on the needs of the crop and at different moments during the cultivation.

Weight 350 lbs


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