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Grodan plastic tray with drain outlet. Comes with 77 mini rockwool cubes, called Grodan plugs, size 3,6x3,6 cm. Ideal for propagation, seed or cuttings. For use with soil or hydro. The propagation plugs are individually wrapped in plastic which is easy to remove and protects the roots. Grodan rockwool plugs should be soaked in pH 5.5 water overnight before you use them. They come with a neutral pH value of 7.0.
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