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Grodan block 7,5x7,5 cm

Start from seed or cuttings easily and successfully

Grodan rockwool blocks are ideal for seed and cuttings propagation. Grodan blocks are made of volcanic rock, are 100% sterile and can be used in soil and coco as well as in hydroponic systems.

Grodan blocks should be soaked in water with a pH of 5.5 before rooting. After soaking, do not squeeze to avoid damaging the internal structure. Grodan blocks are individually wrapped in plastic to prevent algae growth.

Grodan blocks are the ideal medium for successful cultivation. 

 
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