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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, 1.5" - Case of 2250 Grodan Gro-Block Improved Mini-Block, 1.5" - Case of 2250 - Hydroponics

    Grodan Gro-Block Improved Mini-Block, 1.5" - Case of 2250

    Grodan

    $525.24
      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...
    $525.24
    Qty in Cart: 0
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    $525.24
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  • Grodan Delta 6.5 with Hole, 4" x 4" x 2.5" - Case of 36 Grodan Delta 6.5 with Hole, 4" x 4" x 2.5" - Case of 36 - Hydroponics

    Grodan Delta 6.5 with Hole, 4" x 4" x 2.5" - Case of 36

    Grodan

    MSRP: $238.81
    $189.07
      Grodan Product Documents Grodan Delta Product Data Sheet Grodan Delta Safety Data Sheet The Foundation for uniform and perfectly controllable propagation of plants. Details Grodan Delta is the basis for an easy to steer propagation process,...
    MSRP: $238.81
    $189.07
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    MSRP: $238.81
    $189.07
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  • Root Royale CocoPure 50L RHP Certified

    Root Royale CocoPure 50L RHP Certified

    DL Wholesale

    MSRP: $44.95
    $23.12
    Root Royale Cocopure is a natural growing medium produced from premium grade coconut husks. Root Royal has a high water absorption rate and maintains 30% air porosity, which results in optimum growing conditions for your plants. The coco coir consists of...
    MSRP: $44.95
    $23.12
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    MSRP: $44.95
    $23.12
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  • Root Royale Clay Pebbles 50L - Pack of 24

    Root Royale Clay Pebbles 50L - Pack of 24

    DL Wholesale

    MSRP: $54.45
    $23.44
    ROOT ROYALE™Hydro Clay Pebbles are an environmentally friendly grow medium that can be reused over and over again! These clay pebbles have been fired in super-heated kilns causing them to expand and become extremely porous. These tiny holes and...
    MSRP: $54.45
    $23.44
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  • FloraFlex FloraCaps 8'' x 8'' 2.0

    FloraFlex FloraCaps 8'' x 8'' 2.0

    FloraFlex

    MSRP: $31.99
    $5.55
    Place the revolutionary, patent-pending FloraCaps™on your 8" Rockwool cubes, and maximize your space in the Vegetative cycle. flower designed louvers block light, while allowing air, water, and nutrients to your plant. • Reduce your top...
    MSRP: $31.99
    $5.55
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    $5.55
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  • FloraFlex FloraCap 2.0, 6 Inch FloraFlex FloraCap 2.0, 6 Inch - Hydroponics

    FloraFlex FloraCap 2.0, 6 Inch

    FloraFlex

    MSRP: $29.99
    $3.77
    FloraCap The FloraFlex FloraCap is a patent pending revolutionary tool for top feeding that also helps eliminate algae. The FloraCap 2.0 was redesigned to give you a more consistent flow rate, even distribution, a slightly increased air flow, and...
    MSRP: $29.99
    $3.77
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    $3.77
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  • Grodan Delta 5.6 with Hole, 3" x 3" x 4" - Case of 32 Grodan Delta 5.6 with Hole, 3" x 3" x 4" - Case of 32 - Hydroponics

    Grodan Delta 5.6 with Hole, 3" x 3" x 4" - Case of 32

    Grodan

    MSRP: $306.71
    $194.27
      Grodan Product Documents Grodan Delta Product Data Sheet Grodan Delta Safety Data Sheet The Foundation for uniform and perfectly controllable propagation of plants. Details Grodan Delta is the basis for an easy to steer propagation process,...
    MSRP: $306.71
    $194.27
    Qty in Cart: 0
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    MSRP: $306.71
    $194.27
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  • Grodan Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384 Grodan Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384 - Hydroponics

    Grodan Delta 4 Block, 3" x 3" x 2.5" with hole, case of 384

    Grodan

    MSRP: $306.78
    $194.32
    Delta 4 Block, 3"x3"x2.5" with hole, case of 384Grodan Stonewool (rockwool) is made from molten rock spun into cotton candy-like fibers and then compressed into cubes, blocks, or slabs. Where other rockwool brand manufacturers cut all sizes from one...
    MSRP: $306.78
    $194.32
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    MSRP: $306.78
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  • Grodan Gro Block Improved Mini Block 1.5" Strip Grodan Gro Block Improved Mini Block 1.5" Strip - Hydroponics

    Grodan Gro Block Improved Mini Block 1.5" Strip

    Grodan

    MSRP: $409.80
    $409.31
    Gro Block Improved Mini Block 1.5" (Strip)Grodan ImprovedGro Block Improved Mini Block 1.5" StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America to identify the optimal...
    MSRP: $409.80
    $409.31
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    $409.31
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  • Grodan Gro Block Improved Mini Block 1.5" Shrink wrapped/Strip Grodan Gro Block Improved Mini Block 1.5" Shrink wrapped/Strip - Hydroponics

    Grodan Gro Block Improved Mini Block 1.5" Shrink wrapped/Strip

    Grodan

    MSRP: $519.14
    $417.25
    Gro Block Improved Mini Block 1.5" (Shrinkwrap/Strip)Grodan ImprovedGro Block Improved Mini Block 1.5" Shrink wrapped/StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North America...
    MSRP: $519.14
    $417.25
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    MSRP: $519.14
    $417.25
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  • Grodan Gro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" Strip Grodan Gro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" Strip - Hydroponics

    Grodan Gro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" Strip

    Grodan

    $211.49
    Gro Block Improved Small 3" GR4 w/ hole (3"x3"x2.6") (Strip)Grodan ImprovedGro Block Improved GR4 Small 3" w/Hole 3" x 3" x 2.6" StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout...
    $211.49
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  • Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip, (case of 144 blocks) Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip, (case of 144 blocks) - Hydroponics

    Grodan Gro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" Strip, (case of 144 blocks)

    Grodan

    MSRP: $168.49
    $166.67
    Gro Block Improved Large 4"GR10 w/ hole 4"x4"4" StripGrodan ImprovedGro Block Improved GR10 Large 4" w/Hole 4" x 4" x 4" StripGrodan partnered with the Wageningen University and Research facility in The Netherlands and top growers throughout North...
    MSRP: $168.49
    $166.67
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    $166.67
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