Brownish/blackish/purplish color on fan leaves

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It’s about 6.5 in and nearly the same on run off. The RH swings from 40-high 50’s day to night, and the temp goes from high 60’s to 80ish.

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That was definitely my first move, just not a lot that were very similar. I’m thinking now that it might be the nighttime cool down that’s causing...

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Heard that, just being a first time parent to these little beauties has me all wound up over every little thing that even semi-remarkable, lol.

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I was thinking that might be part of it. The plant otherwise seems to be doing wonderfully, drinks water, runoff is perfect PH, always has airflow, etc....

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Hello! Pretty much first time grower, had a series of events that started this grow journey off. About a year and a half ago I got a Viparspectra xs1500...