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Thread: Is this a mag deficiency?

  1. #1

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    Default Is this a mag deficiency?

    Hi I am hoping someone may be able to help. Just done a nute change for the last week of vegging but I started to see browning of the leaves. From a previous post I was told it may be a mag deficiency. My tap water is around 0.4 but I use a Bluelab Truncheon which only shows basic EC. Really struggling to work out the dosage if in fact it is a mag problem. My EC is currently 0.9 as I am using a Rush R-DWC system. Ph is being adjusted to about 5.5. Any thoughts or suggestions would be welcomed. Thanks


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  3. #2

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    Hi. Is this new damage or old damage? The new growth is looking good. Did you have any large PH fluctuations? It looks like this could be PH fluctuation issue.

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  5. #3

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    Hi. It started a week ago but my EC and ph were stable at around 5.7. EC was a little high so I was told for the system I use. It is still about the same following a nute change. I have added a little cal mag but am unsure about how much I should add if I am honest


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  7. #4

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    i would start with half the recommend amount on the bottle and see how she responds.

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  9. #5

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    Many thanks.

    I have dropped the EC to 0.9 and ph is at 5.9. I have removed the dodgy leaves and they are still looking healthy. I am almost ready to flip, so I guess this will be the acid test!

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