Leaves curling up and turning brown

This is my first grow inside. Northern lights and blueberry. Autoflower. They look great but the leaves tips are curling. The were in my shed with no heat . It went down to 25 and moved them inside next day. Now they are at 70 degrees . Lights have been on 27/7.

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Looks like heat stress

I’ve had them closed up. I took a panel of and have a fan on them now. Thanks

It’s not a bad case of it, so it should be fine.
Lookin good, good luck

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