Grow Media 2.5cm (Small Hole) / Box of 216 Grodan - 4 inch Rockwool Blocks
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Grow Media 2.5cm (Small Hole) / Box of 216 Grodan - 4 inch Rockwool BlocksGrow Media 3.6cm Hole / Single 4 inch / 10cm Grodan Rockwool BlocksGrow Media 2.5cm Hole / Single 4 inch / 10cm Grodan Rockwool Blocks

Grodan - 4 inch Rockwool Blocks

GRODANSKU: 1669
Size: 2.5cm (Small Hole)
Option: Single
Price:
£0.55
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Description

4 inch / 10cm Grodan Rockwool Blocks are used to transplant your rooted cuttings or seeds into with the idea being to grow your babies to a suitable size before moving them to your final pots or hydroponic system.

These Rockwool blocks are available with a 2.5cm (small) or 3.6cm (large) hole.1111

Before using a Rockwool growing medium, always pre-soak it for 24hrs in a weak nutrient solution (less than 1 EC) with a pH of 5.5 - add in a small amount of root stim to increase your EC. This presoaking will negate the naturally high pH in the Rockwool.

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