Calmag deficit?
Growbaystarted grow question 4y ago
Hello,
I would like to know your oppinion, 3 weeks old plants under LED, I didn’t added Calmag till now to them feed, do you agree with early stage of Calmag def.? Ph 6,2 on outcome
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Leaves. Other
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JOE_S_GARDENanswered grow question 4y ago
yes it is magnesium deficient.
Magnesium (Mg) deficiency in cannabis plants
If the Ph range of the substrate is lower than 7.0, then magnesium can be easily absorbed by cannabis plants. But if the soil is very acid - lower than 5.0 - magnesium won't be assimilable by the plants.
Benzelsanswered grow question 4y ago
Keep using the cal mag for at least a few more weeks ok. It helps alot more then you prob think. Or yeah a bit of epsom salts will help too, And give it a week or so and you will see it recover.
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ProjetcOOO_12answered grow question 4y ago
Hey buddy, the marks are signs of calcium deficiency, it's important to stop that. If you lower the LED watts a bit and give them some good boosts, they'll recover quickly. Don't be afraid, they respond well if you water every two days at 1.7 EC, just make sure it drains a little... if you don't use a breaker, it's not the same as a salt drainer. Good luck, green friend!
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Growbayanswered grow question 4y ago
Thank you guys, I already added Calmag this morning and increased Ph on 6,5(I see that most Mg plants accept with Ph close to 7) I am used to add calmag after switch to flower this is first time when I see deficit so soon
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