CS75 (900) Slabs - Upuper Rockwool

The UPuper® CS 75 Rockwool grow blocks are designed for larger, long-term crops with extensive roots, such as cannabis, peppers, tomatoes, or cucumbers. These blocks come in a single size of 40 x 8 x 3 inches and can be customized with either no holes or pre-cut holes (75mm/100mm, 4 holes, or customizable). They are wrapped in white film and packaged in sets of 6.

These grow blocks are known for their inert hydrophilic fiber technology, which ensures perfect water retention and high resaturation capacity. They are ideal for growers looking for consistent product performance and a favorable environment for plant growth. The blocks are packaged in biodegradable, UV-resistant sleeves to prevent algae growth and ensure comfortable handling.

To use, pre-soak the blocks before planting and adjust the pH to 5.5-6.5 for cannabis planting. The blocks can be placed directly onto slabs, and the top can be customized to accommodate grow cubes. Removing the wrapping and mixing it with soil can improve soil air permeability.