Grodan 4x4x4" Rockwool Grow Block Improved size:6/Pack Store closed and in a

Store closed and in a dark and frost-proof place

that means you can save up to 40% on your power bill while covering the same area

Colour Rendering Index

Features day and night distinct cycles

Grodan 4x4x4" Rockwool Grow Block Improved size:6/Pack Store closed and in aNew Grodan 4x4x4" Block Improved! Improved product at current pricing. New density + new hydrophilic technology = better water distribution and root development. The uniform distribution of water and nutrients throughout the block allows for more efficient use of the entire substrate volume Full saturation of the blocks with no dry spots and improved EC control with less water is achieved in the rootzone due to the uniform, optimized wool resulting in