Is this normal?

Is it normal for my flowering plants to yellow and get brown spots and crispy like this? ?

looks like a cal-mag deficiency to me

Any suggestions how to fix/prevent this? ? They're getting crispy as well.

What's your temperature?

68-70 when light offor and low of like 53-54 when off

Got them under 1000w super hps hortilux

A friend told me this is normal and means they're close to done

worldsandreams said:

looks like a cal-mag deficiency to me

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So is it a calcium deficiency or a magnesium deficiency? Cal-mag is frequently sold together in bottles but that doesn't mean the plant needs both.

Is a nitrogen deficiency a possibility?

$moke407 said:

68-70 when light offor and low of like 53-54 when off

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Temperatures below 60 aren't really ideal try a heater or insulation

Perhaps what nutrients were you running in flower and what is the npk ratio?

The rock nutrients and silica and Humboldt honey carbs idk what Npk stands for though

I'll probably have to get a heater when I harvest and get money back its in the basement it don't go below 55 I'm pretty sure that's at like 4 am light goes off at like 845 pm

$moke407 said:

A friend told me this is normal and means they're close to done

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The pistils on the plant he posted are all white still, it's nowhere near mature.

$moke407 said:

idk what Npk stands for

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I believe you based on how your plants look.

Try starting with basic of research, like read a book about growing cannabis. It will be a lot easier if you know basic terms and how growing works.

he's locked out on the mag side. If it were calcium it would show more round spots through out the leaf and not that nitrogen tipping you are seeing. good news is its not all the way up the plant yet. Flush that beast out and make sure your ph is in a good zone. cal mag lockout and ph fluctuations go hand in hand and often look the same. Corrective action: flush until a decent ph is reached. Double up on cal mag and a light nuet solution. Takes about 7 days to see if it has corrected. just watch the upper/newer growth for signs of it still being locked out IE spots or discoloration. good luck to ya. your pretty close to wrapping that grow up. CAL and MAG are both absorbed the best at a PH of 6.2