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What Is Photosynthesis? And why is the most important thing on earth?
What Is Photosynthesis? And why is the most important thing on earth?
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What Is Photosynthesis? And why is the most important thing on earth?

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Irrigation method with lightmix (peat based substrate) + GHF Bioline (peat based substrate)
Irrigation method with lightmix (peat based substrate) + GHF Bioline (peat based substrate)
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How to optimize your irrigation when using peat based substrate and organic dry amendment like our Bioline ?

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Indoor grow lights
Indoor grow lights
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Indoor grow lights

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What is VPD ?
What is VPD ?
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VPD controls how much water the plant loses, which controls cooling, nutrient uptake, stomatal behaviour, and...

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Extra mineral aerated compost tea
Extra mineral aerated compost tea
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Extra mineral aerated compost tea (calcium and trace element) 

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GHF Calmag

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Posted in: MINERAL NUTRIENTS

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  • GHF Calmag
    By: Smith Kush On 12/01/2025

    Здравствуйте. Для чего и с какой вообще целью вы сделали эту добавку? GHF Calmag? Есть уже Calcium. А магний в базе. Для чего?

    Replied by: Ben GHSC On 12/01/2025 Hello Smith Kusk,

    Thank you for your question.

    We released the GHF Calmag as a stand alone product that can be used with our line and with other brands. Growers were using other Calmag brands with our fertilizer line and we had demand for it, so we decided to make our own one.
    Regarding calcium: our base nutrient doesn't contain calcium.
    We have our GHF Calcium additive (Ca EDTA), we now advise to use it preferably for soil or peat based substrate (lightmix/allmix)
    but for coco or rockwoll we prefer to advise the use of Calmag (or Calcium nitrate)
    Regarding Magnesium: it is true that we add a bit more magnesium than usual (if you add the max dose of Calmag), but the tests showed great results even with higher amount of magnesium !
    The only important things with Calmag : don't use it with Grow (too much N) and don't mix it with the other GHF Calcium additive.
    We add new feeding schedule on the website including Calmag, soil schedule, hydro schedule.

    Kind regards

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