Sand quartz valley of fertility, fr. 0.8 - 2 mm, 5 kg

Quartz sand is used to compose substrates and decoration in crop production. Improves soil structure. Suitable for germination of seeds, rooting cuttings, for this you can use in its pure form or in a mixture with perlite (vermiculite, peat). For growing onion, they are used as a dense drainage. Quartz sand is used to clean the pools by filtering through quartz (sand) filters. The size of the sand fraction when replacing in the filter must correspond to the water -cleaner model. Sand effectively retains various pollution, heavy metals, radionuclides, viruses and bacteria.