Growstone GS-1 Hydro Stones Sponge Rock

Growstone GS-1 Hydro Stones! Like LARGE SpongeRock-10L-Semi-Hydro-Hydroponic products-6.00
Growstone GS-1 Hydro Stones! Like LARGE SpongeRock-10L-Semi-Hydro-Hydroponic products-6.00
Product Code: USA
Availability: Sorry Out Of Stock
Price: £6.00
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Growstone GS-1 Hydro Stones Sponge Rock


We think this is going to be popular, it looks and feels great for addition to your orchid and plant mixes, or for hydroponics.

Great for making your mix more open, or for drainage in the bottom of the pot or maybe dable and try on its own.

Its got the feel of large perlite/sponge rock, but we feel is better being 100% recycled glass and with credentials like below we think its a winner!

Growstone GS-1 Hydro stones is the perfect growing medium for vegetables, fruits, herbs and flowers - from lettuce and basil, to tomatoes, cucumbers, strawberries, gerbera daisies and orchids. Growstones aggregates are engineered to provide an effective ratio between aeration and moisture to hydroponic systems. While other substrates maximize either air or moisture, Growstones are designed to allow for both moisture absorption and drainage. Most important in any growing medium is the air in the medium after drainage. Plant roots require air (particularly oxygen) for growth process respiration. Growstones aggregates make for an ideal hydroponic substrate due to its small and large pores. When the substrate is irrigated, water is held in the micro pores but quickly drains through the macro pores, allowing fresh air to flow through the substrate, which brings oxygen to the roots and removes carbon dioxide from the root zone.

  • Dust-free
  • Lightweight
  • pH stable
  • Non-toxic
  • 3/8 in. - 3/4 in. particle size
  • Kiln fired recycled glass
  • Ideal for hydroponic systems
  • Reusable
  • Compatible with Grow Up hydrogarden system
  • 100% recycled


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