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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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  • Nectar for the Gods Soil Blend #2, 1.5 cu ft

    Nectar for the Gods Soil Blend #2, 1.5 cu ft

    Nectar for the Gods

    MSRP: $52.95
    $22.08
    Nectar for the Gods Potting Soil Blend 2, 1.5 cfBlend #2Nectar's soilless medium, suitable for hydroponic use and daily Nectar feedings. Mixed in small batches. Coir fiber is rinsed on-site with Oregon rainwater and buffered with limestone to reduce...
    MSRP: $52.95
    $22.08
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  • Wiggle Worm Soil Builder Vermicompost, 2000 lbs

    Wiggle Worm Soil Builder Vermicompost, 2000 lbs

    Wiggle Worm Soil Builder

    MSRP: $338.95
    $318.11
    Wiggle Worm Soil Builder Vermicompost, 2000 lbsWiggle Worm Soil Builder Vermicompost is TRULY a vermicompost. It comes from the largest commercial worm farm in the country and contains ORGANIC matter, peat, worm cocoons, decomposed leaf compost and worm...
    MSRP: $338.95
    $318.11
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  • Char Coir 100% RHP Certified Coco Coir, 50 L Char Coir 100% RHP Certified Coco Coir, 50 L - Hydroponics

    Char Coir 100% RHP Certified Coco Coir, 50 L

    Char Coir

    MSRP: $56.95
    $32.45
    Char Coir100% RHP Certified Coco Coir, 50L Char Coir loose coco coir is a professional grade growing medium made from 100% coconut fiber.  Char Coir brand coco coir has received RHP certification from Holland. This assures our customers that it is...
    MSRP: $56.95
    $32.45
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  • Grodan PRO Unwrapped A-OK Starter Plugs, 2" - 50 per Sheet - Case of 30 Sheets

    Grodan PRO Unwrapped A-OK Starter Plugs, 2" - 50 per Sheet - Case of 30 Sheets

    Grodan

    MSRP: $386.73
    $354.58
    Grodan Product Documents Grodan A-OK Starter Plugs Safety Data Sheet A-OK Starter Plugs A-Ok Starter Plugs are for starting seeds and rooting cuttings prior to plugging into larger Gro-Blocks Grodan A-OK plugs are designed for seed and cutting...
    MSRP: $386.73
    $354.58
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  • Grodan A-OK Starter Plugs, 2" - 50 per Sheet - Case of 30 Sheets Grodan A-OK Starter Plugs, 2" - 50 per Sheet - Case of 30 Sheets - Hydroponics

    Grodan A-OK Starter Plugs, 2" - 50 per Sheet - Case of 30 Sheets

    Grodan

    MSRP: $474.98
    $461.98
    Grodan Product Documents Grodan A-OK Starter Plugs Safety Data Sheet A-OK Starter Plugs A-Ok Starter Plugs are for starting seeds and rooting cuttings prior to plugging into larger Gro-Blocks Grodan A-OK plugs are designed for seed and cutting...
    MSRP: $474.98
    $461.98
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  • Grodan A-OK Starter Plugs, 1.5" - 98 per Sheet - Case of 30 Sheets Grodan A-OK Starter Plugs, 1.5" - 98 per Sheet - Case of 30 Sheets - Hydroponics

    Grodan A-OK Starter Plugs, 1.5" - 98 per Sheet - Case of 30 Sheets

    Grodan

    MSRP: $548.39
    $380.37
    Grodan Product Documents Grodan A-OK Starter Plugs Safety Data Sheet A-OK Starter Plugs A-Ok Starter Plugs are for starting seeds and rooting cuttings prior to plugging into larger Gro-Blocks Grodan A-OK plugs are designed for seed and cutting...
    MSRP: $548.39
    $380.37
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  • Char Coir BioPot, 8 Liter/2 Gallons, Case of 10 Char Coir BioPot, 8 Liter/2 Gallons, Case of 10 - Soils & Containers

    Char Coir BioPot, 8 Liter/2 Gallons, Case of 10

    Char Coir

    $89.91
    Char Coir Product Documents Char Coir MSDS The Char Coir BioPot is designed for the vegetative and flowering stages in the same container. No external container is needed, since the BioPot is wrapped in a fabric exterior, with compressed coco coir...
    $89.91
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  • GROW!T Coco Caps, 6", Pack of 10 GROW!T Coco Caps, 6", Pack of 10 - Hydroponics

    GROW!T Coco Caps, 6", Pack of 10

    GROWIT

    MSRP: $30.99
    $7.23
    An alternative to plastic covers for rockwool blocks. Use Coco Caps to help prevent light penetration that may cause algae growth.
    MSRP: $30.99
    $7.23
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  • GROW!T Coco Caps, 4", Pack of 10 GROW!T Coco Caps, 4", Pack of 10 - Hydroponics

    GROW!T Coco Caps, 4", Pack of 10

    GROWIT

    MSRP: $30.99
    $5.84
    An alternative to plastic covers for rockwool blocks. Use Coco Caps to help prevent light penetration that may cause algae growth.
    MSRP: $30.99
    $5.84
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  • Roots Organics Coco Chips Compressed 12"x12"

    Roots Organics Coco Chips Compressed 12"x12"

    Roots Organics

    MSRP: $24.99
    $16.66
    INGREDIENTS100% Pure Coco Chips from Coconut HusksRoots Organics Coco Chips have a near perfect natural pH level (5.2-6.3) for optimum nutrient uptake. Roots Organics Coco Chips are premium chips that are age cured and meticulously washed to remove...
    MSRP: $24.99
    $16.66
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  • PLANT!T Organic Coco Planting Chips

    PLANT!T Organic Coco Planting Chips

    PLANTIT

    MSRP: $37.19
    $14.30
    Use these organic CoCo Coir planting chips to promote growth for tropical flowers and plants.Works both indoors and outdoorsIdeal for mulching or as a decorative ground cover that retains water and resists fungus.Each block of chips is equivalent to more...
    MSRP: $37.19
    $14.30
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  • Hydrofarm 6" Rockwool Block Cover, pack of 40

    Hydrofarm 6" Rockwool Block Cover, pack of 40

    Hydrofarm

    MSRP: $48.68
    $16.99
    Block light from media. Reflect light to plant leaves - where it's needed most. Eliminate algae and mildew growth. 40 dual-sided block covers per pack
    MSRP: $48.68
    $16.99
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