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Hydroponic Grow Media

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Hydroponic Grow Media

Hydroponic Grow Media

If you are not too familiar with hydroponics, you may be under the impression that it involves growing entirely in water. However, the reality is that sometimes you need to use grow media for a hydroponics system too. The reason is, it is needed to anchor the roots so that the plant can be supported in place. When you are growing outdoors traditionally in pots, garden soil is the most common choice. For hydroponic systems, you need a specific growing medium.  

What is a hydroponic grow medium? 

The term ‘hydroponic grow medium’ refers to an inert material that is used to anchor your hydroponic plants in their place. Since it is inert, it does not provide any minerals or nutrients to your plants. It is possible to make your own hydroponic grow medium, but there are several great options available in the market, including: 

Coco coir  

Clay pebbles and growstones 

Rockwool 

Hydroponic foam 

The best hydroponics growing medium  

The right growing medium for you depends on your specific requirements, and each of them has its pros and cons. Here are some brief details about each of them: 

Coco Coir 

Coco coir is derived from coconut husk and is 100% organic. It boasts of exceptional drainage abilities and water retention qualities. You can find it in various consistencies and utilize its superior germination capabilities to start your clones and seedlings.  

There’s another great thing about this hydroponic grow medium – it is entirely renewable. Since coconut husk does not have any other use, when you use it as a hydroponic grow medium, you are actually playing your part in environment conservation – which is a win-win situation! 

Clay pebbles and grow stones 

Clay pebbles and grow stones are 100% inert and also pH neutral. You can use them again and again for different grow cycles, and are sure to find them extremely sustainable. Manufactured from recycled glass that has been made smooth through sanding, these lightweight grow stones, and clay pebbles are a popular choice for a good reason.  

Check out our detailed guide on clay pebbles and grow stones to learn more! 

Rockwool 

Rockwool is created by melting rocks, which are then spun into fibers. This is a favorite choice for many growers because it offers excellent aeration and water retention. Its unique composition allows it to avoid getting degraded or broken down, which may be a problem when you want to get rid of it by disposing of it naturally.  

Rockwool is a preferred choice for many growers but if you opt for this option, make sure you remember to balance their pH using a pH adjuster. The rockwool cubes may have high pH.  

Hydroponic Foam and Oasis Cubes 

Oasis cubes, also called hydroponic foam, is another great choice for a hydroponic medium. Made from polyurethane, it is resistant to algae, porous, and does not alter your hydroponic system's pH.  

The good thing about this option is that it does not cost you much. There is also no need to presoak the cubes. However, one thing that some growers may not like about oasis cubes is that they are not sustainable or organic.  

Buy the best hydroponics grow medium at Groindoor.com 

If you need help with choosing the right hydroponic grow medium, the experts at Groindoor.com can help you. Reach out to our experts at 866-GRO-INDR or read our guide on the complete range of hydroponic media in our learning center 

 

 

 

 

 

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  • Grodan Gro-Block Improved Mini-Block, 2" - Case of 1440 Grodan Gro-Block Improved Mini-Block, 2" - Case of 1440 - Hydroponics

    Grodan Gro-Block Improved Mini-Block, 2" - Case of 1440

    Grodan

    MSRP: $579.75
    $474.79
      Grodan Product Documents Grodan Starter Mini-Blocks Safety Data Sheet Grodan Starter Mini-Blocks Mini-Blocks™ sit in a tray (flat) without support for easy starting of seeds and cuttings. These Mini-Blocks are individually wrapped in white...
    MSRP: $579.75
    $474.79
    Qty in Cart: 0
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    MSRP: $579.75
    $474.79
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  • Grower's Edge Block Covers, 6 in

    Grower's Edge Block Covers, 6 in

    Growers Edge

    MSRP: $23.12
    $18.56
    For blocks of rockwool and other grow media. These Grower's Edge Block Covers blocks light from media?ùwhich helps reduce algae. Use white side up to reflect light. Use toothpick to hold cover in place. Hole in center of cover measures 1/2 inch in...
    MSRP: $23.12
    $18.56
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  • Grower's Edge Block Covers, 4 in

    Grower's Edge Block Covers, 4 in

    Growers Edge

    MSRP: $13.41
    $12.87
    For blocks of rockwool and other grow media. These Grower's Edge Block Covers blocks light from media?ùwhich helps reduce algae. Use white side up to reflect light. Use toothpick to hold cover in place. Hole in center of cover measures 1/2 inch in...
    MSRP: $13.41
    $12.87
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    MSRP: $13.41
    $12.87
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  • Mother Earth Hydroton Giant Expanded Clay Pebbles, 50 Liter Bag

    Mother Earth Hydroton Giant Expanded Clay Pebbles, 50 Liter Bag

    Mother Earth

    MSRP: $56.35
    $53.08
    The original Hydroton brand expanded clay is a unique, lightweight expanded clay aggregate made in Germany. This natural clay is mined, formed into pellets, then kiln fired at high temperatures to cause the clay to expand into tough, lightweight balls...
    MSRP: $56.35
    $53.08
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  • Mother Earth Hydroton Original Clay Pebbles, 50 Liter Mother Earth Hydroton Original Clay Pebbles, 50 Liter - Hydroponics

    Mother Earth Hydroton Original Clay Pebbles, 50 Liter

    Mother Earth

    $48.35
    Mother Earth Product DocumentsMother Earth Hydroton MSDS The original Hydroton brand expanded clay is a unique, lightweight expanded clay aggregate made in Germany. This natural clay is mined, formed into pellets, then kiln fired at high temperatures to...
    $48.35
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  • Mother Earth Hydroton Original Clay Pebbles, 25 Liter Mother Earth Hydroton Original Clay Pebbles, 25 Liter - Hydroponics

    Mother Earth Hydroton Original Clay Pebbles, 25 Liter

    Mother Earth

    $25.59
    Mother Earth Product DocumentsMother Earth Hydroton MSDS The original Hydroton brand expanded clay is a unique, lightweight expanded clay aggregate made in Germany. This natural clay is mined, formed into pellets, then kiln fired at high temperatures to...
    $25.59
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  • Gro Block Improved Mini Block 2" (Shrinkwrap/Strip)

    Gro Block Improved Mini Block 2" (Shrinkwrap/Strip)

    Grodan

    MSRP: $470.22
    $465.74
    Grodan ImprovedGro Block Improved Mini Block 2" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and...
    MSRP: $470.22
    $465.74
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  • Grodan GR40 Uniblock 8”x8”x4” Baby Mama, case of 36

    Grodan GR40 Uniblock 8”x8”x4” Baby Mama, case of 36

    Grodan

    MSRP: $191.65
    $173.51
    Grodan ImprovedUniblock GR40, 8" x 8" x 4"Grodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool substrate and irrigation strategies for...
    MSRP: $191.65
    $173.51
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  • Gro Block Improved Medium 4"GR7,5 w/ hole 4"x4"3.1" Shrink/S

    Gro Block Improved Medium 4"GR7,5 w/ hole 4"x4"3.1" Shrink/S

    Grodan

    MSRP: $294.10
    $284.18
    Grodan ImprovedGro Block Improved GR7.5 Medium 4" w/Hole 4" x 4" x 3.1" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone...
    MSRP: $294.10
    $284.18
    Qty in Cart: 0
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    MSRP: $294.10
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  • Gro Block Improved Large 3"GR5,6 w/ hole 3"x3"x4" Shrink/Str

    Gro Block Improved Large 3"GR5,6 w/ hole 3"x3"x4" Shrink/Str

    Grodan

    MSRP: $306.71
    $296.36
    Grodan ImprovedGro Block Improved GR5.6 Large 3" w/Hole 3" x 3" x 4" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal stone wool...
    MSRP: $306.71
    $296.36
    Qty in Cart: 0
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    MSRP: $306.71
    $296.36
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  • Rocket Earth 2 Yard Tote

    Rocket Earth 2 Yard Tote

    Rogue Soil

    $839.60
    Rocket EarthRocket Earth was designed for the grower who enjoys a fast draining medium. Based on grower’s grade Manitoban long fiber peat moss, Rocket Earth is one of the best indoor and greenhouse blends on the market today. Rocket Earth allows the...
    $839.60
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  • Rocket Earth 1.5CF Bag

    Rocket Earth 1.5CF Bag

    Rogue Soil

    MSRP: $31.95
    $29.94
    Rocket EarthRocket Earth was designed for the grower who enjoys a fast draining medium. Based on grower€™s grade Manitoban long fiber peat moss, Rocket Earth is one of the best indoor and greenhouse blends on the market today. Rocket Earth allows the...
    MSRP: $31.95
    $29.94
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