4 inch / 10cm Grodan Rockwool Blocks


Hole Size: 2.5cm Hole
Quantity: Single
Sale price$0.57


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.

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.

Payment & Security

American Express Apple Pay Diners Club Discover Google Pay Maestro Mastercard PayPal Shop Pay Union Pay Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

You may also like

Recently viewed