First Autoflower Grow Issue

Hello,

I just checkmy plants today and am getting some tip burn showing up on 1 of my 4 plants. Do you know what the cause would be?

They are currently in FFOF In 5 Gallon pots. Last watering on 10/21 was 1 gallon per plant with 3ML Calmag per gallon. I have never fed any nutes outside of Calmag. Water is PHd to 6.5

lights are at 24 inches. Temp fluctuates from 79 to 82 degrees. Around 60% humidity.

Thanks for your help.

Excess nitrogen. From the soil and from your cal mag.

hotrodharley said:

Excess nitrogen. From the soil and from your cal mag.

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Hmm, I’ll lay off the Calmag. Is there anything I can do with the excess nitrogen? Or will I just have to wait it out.
Thanks for your help

Ripvanwinkle08 said:

Hmm, I’ll lay off the Calmag. Is there anything I can do with the excess nitrogen? Or will I just have to wait it out.
Thanks for your help

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Just wait it out. Nitrogen is absorbed very quickly. Used very quickly too. Suggest pH adjusted water next time.

FFOF can be a bit hot for autos but if you've got them that far, you've done better than most.

hotrodharley said:

Just wait it out. Nitrogen is absorbed very quickly. Used very quickly too. Suggest pH adjusted water next time.

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Sorry I edited it since my original post. All watering since seed have been at of a PH of 6.4 to 6.7. I Use an electronic ph tester but just tested it with strips to confirm accuracy. It seems to be accurate.

Oldreefer said:

FFOF can be a bit hot for autos but if you've got them that far, you've done better than most.

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Thanks, the odd part is they have been transferred to 5g pots with FFOF for about 3 weeks now and are just showing nute burn.