Brown, curled tips. under-water/light-burn/something else?

pulpoinspace

Well-Known Member
I had to go out of town for 5 days without anyone to water my plants. came back and medium was bone dry, pots were light as a feather, and one of them was browning. they were drinking their 5L in about 3-4 days so i figured an extra day wouldn't hurt.

I'm wondering if this is a symptom of underwatering, light burn, or something else

using roots organic original potting mix, H&g A+B last feed was 1.5 EC
been using the same water, feed, pH, as always and never had this issue

Lights are at 350w in a 3x3 and about 22" away
Its also been a bit cold and dry. mid 70s at day and high 50s at night.

This strain isn't turning out to be as idiot proof as others i've grown.
Too bad i'm an idiot.

Any opinions?
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