Need help!

[Z87566866]

So I have these plants for 3 weeks old, they have mag deficiency for a week and I just put some Dolomites lime on the top of them and watered them. But the yellowing in the middle of leaves appeared two days ago, is that sign of mag deficiency or light burn?

Ph put in 6.5
Ph runoff 5.5
3 * 500 watts light
118 square feets
Ec 0.8
Temperature 75 to 68
Humidity 45%

 

[Z87566866]

I have about 100 plants in my grow room , most of them have mag deficiency and 20 of them have the yellowing or burning on the leaves

 

[PagodaVapors]

So I have these plants for 3 weeks old, they have mag deficiency for a week and I just put some Dolomites lime on the top of them and watered them. But the yellowing in the middle of leaves appeared two days ago, is that sign of mag deficiency or light burn?

Ph put in 6.5
Ph runoff 5.5
3 * 500 watts light
118 square feets
Ec 0.8
Temperature 75 to 68
Humidity 45%

Are you feeding them any nutrients? If so, what is your mixture ?

 

[DeanB]

I think you are confused, should of used Epsom salt for mag. and never put dolomite lime on the plants, that's what burned them.

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[Z87566866]

Yes, I feed them cal mag, house&garden A&B and protekt, I use pro-mix.


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[Z87566866]

Need help!!!

I thought I need to raise the ph level to 6.5 so they can absorb the cal mag.

So how do I use epsom salt and how much, thanks man!

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[PagodaVapors]

Yes, I feed them cal mag, house&garden A&B and protekt, I use pro-mix.


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Ok but what is your mixture ? How much do you mix of each ?

 

[DeanB]

What made you think they had a deficiency to begin with? Promix is good stuff as long as you don't over water it.

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[Z87566866]

they do have deficiency, if you see the leaves , the color is getting light. What's mixture? Soil? I use promix


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[DeanB]

You should be okay if you added the cal/mag. When do you water them?