Growstones

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Growstones are a substrate for growing plants that can be used for soilless purposes or as a soil conditioner. This substrate is made from recycled glass. It has both more air and water retention space than perlite and peat. Another property of this medium is that it holds more water than parboiled rice hulls.^[1]^[2] Growstones appear to be a comparable alternative to expanded clay aggregate.

References

↑ (2011). "Growstones ideal alternative to perlite, parboiled rice hulls". American Society for Horticultural Science http://esciencenews.com/articles/2011/12/14/growstones.ideal.alternative.perlite.parboiled.rice.hulls
↑ Evans, Michael (February 2011). "Physical Properties of and Plant Growth in Peat-based Root Substrates Containing Glass-based Aggregate, Perlite, and Parboiled Fresh Rice Hulls". HortTechnology 21 (1): 30–34.

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Types	Aeroponics Aquaponics Aquascaping Hydroponics passive

Subtypes	Aquatic garden Bottle garden Deep water culture Ebb and flow Fogponics Microponics Nutrient film technique Organic hydroponics Organopónicos Sub-irrigated planter Top drip

Substrates	Charcoal Coco peat Diatomaceous earth Expanded clay aggregate Gravel Growstones Mineral wool Perlite Pumice Rice hulls Sand Vermiculite Wood fibre

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