Cal mag for autos

Ayokiwi717 said:

So my one auto looks like he's having magnesium problems. So I just ordered cal mag, so how do you use this with autos? I know autos are sensitive, so how much should I put in a gallon of water?

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Dontjudgeme said:

Should say on the bottle. I typically use 1 tsp per gallon of water. What type of water are you using? And it doesn’t matter whether you’re growing autos or photos to use calmag.

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Ayokiwi717 said:

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Are you positive? I know for nutrients it needs to be 1/4-1/2 the dose. Is it safe to mix in the that dose with my nute water that I give to the rest of the girls, or do I only give cal mag to the one that has the deficiency? I will have to take pics then. My other three have some nutrient issues, but not nearly as bad. Like I said will have to show pics of all of them.

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Dontjudgeme said:

Should say on the bottle. I typically use 1 tsp per gallon of water. What type of water are you using? And it doesn’t matter whether you’re growing autos or photos to use calmag.

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Dontjudgeme said:

Are you growing in coco? If so I understand the dosing. If not, I’m not entirely sure why you use the strength you do. Some Nutes are hot like Fox Farms Trio for example, I myself use half strength, but it has nothing to do with it being an auto or photo. And I don’t mix my mag with my nutrients, I use mag on my water only days.

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ptrzm said:

I give full dose of cal-mag with 1/4 strength nutes for autos. I have very soft water and found lowering the CM dose caused deficiency.

Watch out for any extras in the CM though. Some brands contain N which will mess up your dosing if you don't account for it.

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