Grodan Delta 6.5 – 4 in Block 4 in x 4 in x 2.5 in w/ Hole


Grodan Delta 6.5 – 4 in Block 4 in x 4 in x 2.5 in w/ Hole


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  • Additional information


Grodan 4″ cube large hole 1 Cube

Grodan Rockwool: 4 in. x 4 in. x 2.5 in blocks

Grodan rockwool is an excellent quality stonewool substrate with a very high water holding capacity. Rockwool is absolutely free of disease, salts, and weed seeds. It has no Cation Exchange Capacity (CEC) so the grower can take advantage of a nutritional program specifically tailored to the crop being grown.

Rockwool blocks containing plants are set on top of the slabs and the roots grow through the block and into the slabs. Nutrient solution may be applied through a spray or drip emitter either directly to the slab or through the growing blocks. Blocks are commonly used for germination of seed and rooting cuttings. The vertically oriented fibers in blocks promote good downward root growth.

Price are for 24 blocks/pack

Additional information

Weight 0.226796 kg
Dimensions 10.16 × 10.16 × 6.35 cm