Grodan Gro-Block Improved GR10 Rockwool Block
Best price now
$1,150.00at Indoor Sun HydroChecked Nov 7
18% under what the other stores charge
Compared across 11 stores. Prices are checked against each store and labelled with when.
18% under what the other stores charge
Compared across 11 stores. Prices are checked against each store and labelled with when.
It checks today's price at every store, compares the alternatives and answers in about a minute.
The Gro-Block Improved GR10 is a 4 x 4 x 4 inch stone wool propagation block sold loose on a 1584-count pallet, meant for commercial growers who plant out at scale. Its tall format gives roots more vertical room than a standard short block, and Grodan's advanced wetting agent spreads water and EC more evenly across the slab. It was developed with Wageningen University and Research and commercial growers, and the finer fibre structure is aimed at uniform crops and tighter steering of vegetative versus generative growth. Compared with generic rockwool blocks it costs more per unit but targets consistency across a whole pallet, which is where large operations see the difference.
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Lowest price we've seen: $1,150.00 on Nov 7 at Indoor Sun Hydro. Tracked across 11 stores since Nov 7.
Growers who use the Improved GR10 generally rate it for even watering and steady rooting compared with older rockwool blocks. Complaints centre on the pallet-only quantity and the handling care stone wool demands.
The Grodan Gro-Block Improved GR10 is a stone wool growing block measuring 4 x 4 x 4 inches. This version is the tall style with white foil. It was developed with Wageningen University and Research and top growers.
The blocks use an advanced wetting agent that supports more even water content and EC distribution. The fiber structure and physical properties are designed for crop uniformity and greater steering capabilities, which means more precise control of irrigation. In trials, the blocks showed faster rooting-in, higher yields, improved quality, and less water and nutrient usage.
This listing is a full pallet of 1584 blocks, supplied loose without boxes or retail labeling.