Bottom leaves curling under

Hello everyone. I am a new grower in the fourth week of my grow. I am growing two chocolope and two big bud. I am growing in coco coir and pearlite. I am using 1000 watt LED in the VEG mode. I am using Fox Farm nutrie
nts and Cal Mag PH’d to 6.0 to 6.1. My plants look great. There are some rust looking spots on the lower leaves that popped up a couple of weeks ago. They haven’t seemed to bother the plant. Yesterday my bottom leaves started curling under. I took my plants outside and put them in the sun for a bit, It was a 97 degree day and I had to water them a couple of times. Just wondering if I should be worried about the curling leaves or just give it a couple of days?

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Hello there @Bwood and welcome to ILGM. Now firstly pics are always worth a thousand words. Also being your first post… you may be ‘silenced’ for a few hours. Sorry its there for spammers. But you maybe able to edit your first post if so. The pen underneath it.

Now did the brown spots stop spreading? If so you fixed the issue. Affected leaves dont really fix themselves. U just see the stop of the deficiency spreading to new leaves. And but curling, you mean the old, first to show leaves? Or new spots curling? This is where pics help.

O and the sun will definitely just accelerate the process. Strongest light i know! (97 degree days also hurt)

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The rust spots are only on the large lower fan leaves. The curling leaves are just above the first to show leaves. I will send you a pic this afternoon

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Is the spread continuing? Also according to @Myfriendis410 (who is a bad A coco grower) coco can be a calmag hog. Think ill defer to him in this situation. How’d u dose the calmag?

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10ml per gallon with my once or twice a day feeding/watering. I am dosing an extra 2ml of the recommended cal mag suggested dose.

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What bout this part👆🏾

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No not spreading…

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Then ya more then likely fixed it. Ugly leaves stay ugly

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Hot days increase nutrient uptake. Likely your girls just took in a bit more than normal due to the heat. I don’t see anything that requires your attention yet but keep an eye on it. Cal mag when watering separate from feeding is what I do.

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Does it hurt to cal mag when feeding?

Nah but u dont want salt buildup too badly. I do like above and calmag on water days

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Hey P-n-G I have another question. I sometimes use my water out of my dehumidifier to water my plants. It only has 35 PPM. You think that is ok?

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A lot of us do it: free water haha!

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I use dehumidifier water. So far no problems.

The leaves look like they’ve had some contact with the soil. Nothing I’d worry too much about, but always keep an eye out for changes.

I also think they’re getting big for those pots.

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You’re in great hands here, just wanted to drop by and welcome you to the forum!