Viagrow Viastone Expanded Clay Rock Hydroponic Gardening Grow Rock (50-Liter)
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- pH neutral, porous, lightweight, reusable, clean and eco-friendly
- Helps increase yield quality & quantity
- Grow rocks measure between 8 and 16 mm in size
- Pellets drain freely without holding excess water, an optimum air-to-water ratio
- Provides high oxygen levels around the roots (especially useful in a flood & drain hydroponic systems)
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ViaStone expanded clay aggregate media is an incredibly resourceful growing material derived from kiln firing clay to over 2,000 degrees and forming it into the round inert and highly porous grow media that is so popular. Clay itself is renewable and plentiful, making ViaStone ecologically friendly. Use ViaStone virtually anywhere: the greenhouse, in propagation systems, for outdoor gardening, around shrubs & trees, as compost aeration, or as a hydroponic growing medium. Expanded clay grow rocks are the most widely used hydroponic media in North America. Please Note – When estimating necessary amount of Viastone for your particular application understand that the 50 liter and 10 liter quantity is based on the standard Horticultural trade gallon = 0.71 U.S. liquid gallons.
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Yes, the individual granules of material floats in the grow bed. That may be why a typical grow bed design has a maximum water level at
about 10 inches and media depth at 12 inches. The two "dry" inches of material hold all of the material in place.
One reviewer commented that the material was not PH neutral. I found that my PH rose a bit during the cycling process but has stabilized
now that the nitrifying bacteria are active.
And yes, I have now purchased 60 50 liter bags through another source for my current aquaponics system.