Grodan AO Plugs, rockwool cubes


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Grodan rockwool cubes

Grodan cubes, a hydroponic substrate, are one of our most popular items. Suitable for a wide range of plants, rockwool plugs are effective in growing anything from tomatoes, lettuce, flowers and even aquatic plants. The cubes are arranged in sheets that make propagating and transplanting easy. The sheets fit nicely into a standard 10” x 20” flat.

This is a clean product, no pollutants or harmful bacteria. It does not lock up or release any substances, ensuring all water and nutrients are available to the plant. It is easy to control and steer the growth of the crop to achieve higher yields than seen in soil-bound cultivation. Stone wool can be recycled (eg composting).

Grodan’s stone wool are specially designed for irrigation efficiency and uniformity.

Grodan AO, AX and TACO plugs Datasheet

Case Study: Bux-Mont Hydroponics

Grodan: Best Practice Guidelines for Greenhouse Water Management

From the blog: Starting seeds in Grodan

From the blog: Grodan rockwool substrates offer growers more control


Grodan AO cubes 25/40 10/10

AO cubes are recommended for lettuce, herbs, and other greens in a raft system as the tapered base makes it easier to fit into the raft faster.


AO 25/40 mm (0.98 x 1.58 in)
L25 x W25 x H40 mm
200 (20 x 10) cubes per pad
Grodan-ao-cubes6,000 cubes per case
30 pads per case


Top = 25 mm
Bottom = 19 mm
Height = 40 mm
Hole = 10 x 10 mm
Weight dry (1 cube) = 2 g
Weight saturated (1 cube) = 18 g
Also available:  AO 36/40 = 1.5 in; 98 cubes/pad; 2,940 cubes/case
AO 50/40 = 2 in; 50 cubes/pad; 1,500/case


Click here to read more about Grodan products.

Additional information

Weight N/A
Dimensions N/A
Plug size

AX 25X40 10X10 hole (1" plugs), 25 x 40, 25 x 40 Straight Cut, 36 x 40 – 10 x 10 hole, 36 x 40 – 15 x 15 hole, 50 x 40


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