Yellow tips on some leaves

My girl is looking really good with lots of foliage and bud sites. My only concern is that I saw maybe 2 or 3 leaves with slight yellow tips. Anything I should be worried about?

Pics or it didn’t happen. :slight_smile:

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Sorry. Here you go.


Not enough to worry about. It’s usually caused by excess nitrogen, but without dark, waxy leaves she will be fine.

Do you know your runoff pH and PPM?


My first grow so I’m not too knowledgeable on PPM. I have a PH tester which puts it right around 6.8. My temp in the room is 71 and the humidity is 45.


Temp/humidity are great. Try to drive pH down to 6.5, though 6.8 isn’t bad. It just at the high end of the range.

Managing PPM is very important for optimal results. Suggest considering obtaining one and maintain runoff PPM at ~1,000.

Have you started a journal for your grow? The growers here love to follow journals and there are a dozen or so of us who spend the majority of our time in the forum mentoring new growers and helping them get great results.


Looking yummy!

I’ve read up that a way to bring the PH down is a shot of nitrogen. Earthworm castings are the best. My only concern is the yellow tipped leaves. Will I be ok if I put about a 1/4 of an inch of castings down?

It is, though it is best if you mix it into the soil before planting. I know exactly zero growers who use worm castings to help manage pH. It’s not going to help lower your pH.

I wouldn’t do this and instead use a pH down product or an equivalent organic such as citric acid. Using nitrogen to manage pH will ultimately cause multiple problems such as a mineral salt buildup and nitrogen toxicity.

Where did you read this? It’s bad advice.

I just googled best way to bring PH down in soil.

Nitrogen will bring down pH, but it creates some unintended consequences that cannabis will struggle to deal with. You might get away with it with tomato or pepper plants. It’s a bad idea for cannabis, as cannabis is highly sensitive to nitrogen excesses. Doing so will result in a salt buildup that will ultimately submarine your pH and it requires flushing to resolve the issue.

Is there a basic PH down that you recommend?

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A lot of growers use this: