The following products on this page are NOT included in AHL's Free Shipping program:
Growstones are a breakthrough substrate environmentally engineered from 100% recycled glass, now made locally right here in Albuquerque! While other substrates maximize either aeration or moisture, Growstones are designed to maintain the proper air and water balance in the roots without the danger of overwatering.
Growstones deliver higher oxygenation of roots than rockwool as well as better water retention than perlite making them a superior substrate without the environmental issues of other available products.
For more information on Growstones, please visit their web site: http://www.growstone.com
Rockwool is volcanic rock that has been superheated to a molten state, then spun into fibers. The fibers are then compressed into cubes or slabs, or shredded into a granulated form. Rockwool offers an excellent balance of air and water for your plants' roots.
For more information on Grodan Rockwool and tons of great tips on hydroponic gardening, visit their web site, Hydroponics 101.
Grodan Rockwool Starter Cubes
Available in three choices:
Grodan Rockwool Grow Blocks
Are available in three choices:
Grodan Rockwool Slabs
Available in the following sizes:
Grodan Rockwool Mini Cubes
These little baby rockwool cubes are a great disposable alternative to grow rocks. Even when grow containers are filled with mini cubes, there is lots of air space between the individual cubes.
Grodan Granulated Rockwool
Miscellaneous Rockwool Supplies
Sunleaves Rockwool Cube Covers fit on top of 4" rockwool blocks, or can be cut to fit 3" blocks. They prevent light from reaching the surface of the cube to reduce messy algae growth.
Hydrofarm Rockwool Cube Covers fit on top of 6" Hugo rockwool blocks. They prevent light from reaching the surface of the cube to reduce messy algae growth.
Plant!T Grow Rocks
Plant!T grow rocks are made of clay that is heated in a furnace until it expands and fills with air. Grow rocks are lightweight, porous, and reusable. Since they are made just for horticultural use, they require no pretreatment and will not react with nutrient solutions.
Perlite is puffed sand and can be used as a hydroponic medium for small, lightweight crops such as lettuce. Perlite is often added to a soil mix to improve drainage and aeration.
Large Grain Perlite
This large-grain horticultural perlite is a favorite of orchid growers and can be added to a soil blend for maximum aeration. Large Grain perlite also works great as a stand-alone hydroponic medium or blended with coconut fiber.
Vermiculite is puffed mica. Each piece can hold many times its own weight in water, so this medium is often used to increase moisture retention in a soil mix. Vermiculite can be used as a medium for cuttings, but is not usually used by itself as a hydroponic medium.
Coconut fiber is a fairly new growth medium, but its popularity is growing quickly because of its impressive results and versatility. The fiber holds lots of moisture while also permitting excellent aeration and drainage. The coconut's natural rooting hormones promote excellent root development—a wonderful medium for cuttings! Coconut fiber can be used by itself, or blended with some combination of soil, perlite and/or vermiculite. In hydroponic systems, the fiber is usually blended with grow rocks. Coconut fiber shares similar properties with peat moss, but the coconut fiber (a by-product of coconut processing) is a totally renewable resource! Sold as a compressed brick or larger block—soak in water to expand compressed coconut into loose fiber medium. Individual bricks make about 2 gallons of medium, while the larger block makes 18-21 gallons.
Jiffy Peat Pellets expand when wet to form a contained ball of peat moss. Easy to use and excellent for starting seeds or cuttings.
These amazing new products from General Hydroponics are plugs made from composted tree bark. Beneficial microorganisms occur naturally from the composting process, and they help give your new roots the boost they need for success. Rapid Rooters are wonderful for cuttings/clones as well as for seed propagation. Sold as a Starter Set of 50 plugs in a propagation tray with specially designed insert, or as a Refill Bag of 50 plugs. The Rapid Rooter Mat is 98 connected cubes sized to fit a standard propagation tray.
Made from a special foam that promotes excellent air/water balance, Oasis Cubes are excellent for starting seeds or rooting cuttings. Since pH is already in the proper range, no pre-treating or conditioning is required when using Oasis Cubes. Oasis Cubes are either 1.5" x 1.5" or 1.5" x 1.25" and are sold by the half sheet, full sheet or case.
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