Grodan rock wool block, 10 x 10 x 6.5 cm, large hole

Growing plants on Grodan blocks is child's play; the blocks fit perfectly into each other. The Grodan Single Block System (SBS) and the AO cultivation blocks fit into all available culture blocks (DM4G, DM6.5G or item no. 4070). Please always select the correct hole size (27 or 40 mm). The culture blocks are then placed either on mats, in other substrates or directly into the breeding system (e.g. ebb and flow table or NFT system). 216 pieces/box

• Grodan rock wool blocks are ideal for the cultivation phase and growing seedlings and cuttings. Whether on soil, coconut or hydroponics – you can use the rock wool cubes with any substrate and growing system

• Dimensions: 10cm x 10cm x 6.5cm

• Hole: Depth: 3.5cm; Diameter: 4cm