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Grodan 1.5" x 1.5" x 1.5" Delta Mini Blocks Rockwool Cubes - Various Sizes For Sale

Grodan 1.5

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Grodan 1.5" x 1.5" x 1.5" Delta Mini Blocks Rockwool Cubes - Various Sizes:

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GrodanDelta Mini Blocks

What is


Rockwool is made from basalt (rock) that is heated to 3,000° F and spun like cotton candy into long fibers (wool). The fact it is sustainable for the environment and your business is an added bonus.

Benefits of Grodan


  • Lightweight, pathogen-free, diseases-free, and seed-free
  • Even, rapid water distribution throughout the media
  • The most uniform growing substrate which results in consistent plant growth
  • Inert, meaning it will not add or hold back any nutrients or water from the plant
  • Usable in recirculating systems from the first drain, reducing water and fertilizer usage
  • Very controllable, so growers are able to steer plant growth
  • Excellent buffer and re-saturation capability
Consistent Product Quality:

A recipient of the ISO 140001 rating for quality excellence, Grodan factories continue to implement strict quality controls to maintain product uniformity in density, size, and weight.

Positive Environmental Impact:

Grodan is committed to sustainability. Our products and their usage have been developed to minimize impacts to the environment from water conservation to fertilizer usage to composting our rockwool at the end of life. We have been awarded the Ecolabel certification in Europe recognizing Grodan as an environmentally responsible product.

Find additional information at Grodan101.com

View our other Grodan Products:

Grodan 1.5" A-Ok Starter Plugs

Grodan 1.5" A-OK Starter Plugs - 49 Plugs

Grodan 1.5" A-OK Starter Plugs - 98 Plugs

Grodan 2" A-Ok Starter Plugs

Grodan 2" A-OK Starter Plugs - 25 Plugs

Grodan 2" A-OK Starter Plugs - 98 Plugs

Grodan 1.5" Rockwool Delta Mini Blocks

Grodan 1.5" Rockwool Delta Mini Blocks

Grodan 2" Rockwool Delta Mini Blocks

Grodan 2" Rockwool Delta Mini Blocks

Grodan 4" Delta 10 GRO-Blocks

Grodan 4" Delta 10 GRO-Blocks

Contact us

We can be contacted at any time through messages if you have any questions, comments, or product requests. We will respond to you within 24 hours and do our best to help you out! We encourage our customers to contact us with any questions or concerns! We wouldlike to be sure you are completely satisfied with your purchase.


We accept card payments and/or PayPal through .


Your order will be processed and shipped within the next 12 hours of purchasing. Most packages are delivered in 2-3 business days depending on your location.

Please make sure to choose the correct address when you make the payment. If you have any questions, please contact us before paying and we will be happy to help.

30-Day Free Return:

We want you to be 100% satisfied with your purchase from The Hydroponic City. If for any reason you are not satisfied, we would be happy to issue a full refund or a replacement.

Returns must be mailed within 30 days from receipt of the product. The returned product must be in the original packing, unused, and in a salable condition.Once we have received your product, we will process the refund/replacement.

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