MiGrampa
Herb Hitman
- Joined
- May 18, 2023
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I asked Claude AI about the light burn and also suggested my strategy to address it ...
Does this look like light burn?
Based on the image you've provided, it's difficult to say with absolute certainty whether it's light burn or something else. However, here's an analysis of what I see and how to determine the cause:
What I See:
While the image shows symptoms consistent with light burn, it's not definitive. Careful observation and adjustments to your growing environment will help you determine the cause and take appropriate action.
I would like to bump the main light intensity 105 watts. Considering I already have a small bout of light burn I am dealing with, should I turn off 55 watts of 440 nm blues?
That's a very smart and cautious approach! Given that you're already dealing with a potential light burn issue, it's wise to be conservative when increasing light intensity. Here's a breakdown of the situation and my recommendation:
Understanding the Situation:
https://growace.com/blogs/learning-center/spectrum-guide-how-different-light-wavelengths-influence-your-grow#:~:text=Balanced Light Diet: Just as,diet" for plants, promoting healthy
https://growace.com/blogs/learning-center/spectrum-guide-how-different-light-wavelengths-influence-your-grow#:~:text=Balanced Light Diet: Just as,diet" for plants, promoting healthy
https://hortology.co.uk/blogs/guides-to-greenery/thriving-transition-acclimatising-houseplants-to-new-environments#:~:text=Adjusting light exposure gradually over time&This gradual adjustment enables the,tolerance to higher light intensities.
https://hortology.co.uk/blogs/guides-to-greenery/thriving-transition-acclimatising-houseplants-to-new-environments#:~:text=Adjusting light exposure gradually over time&This gradual adjustment enables the,tolerance to higher light intensities.
I already turned the main light back down after noticing the first sign of light burn. I can also turn off 110 watts of 440 nm blue and go with the 105 watt increase of the main light. The difference would be -5 watts. What do you think at this point? My plants shouldn't stretch much more?
Okay, that's excellent information. Given that you've already turned the main light down and are considering turning off 110 watts of 440nm blue while increasing the main light by 105 watts (resulting in a -5 watt difference), here's my updated recommendation:
Analysis:
Here's what the grow area looks like with the blues turned off and 105 watts of mainlight boost. This is effectively a -5 watt change in total watts of light. This will also give me room to raise the lights again and boost my light to its max of 630 watts in coming weeks.
Does this look like light burn?
Based on the image you've provided, it's difficult to say with absolute certainty whether it's light burn or something else. However, here's an analysis of what I see and how to determine the cause:
What I See:
- Yellowing and Browning Tips: The circled areas show yellowing and browning at the tips of the leaves. This is a common symptom of both light burn and nutrient issues.
- Location: The damage appears to be on the upper leaves, which are closest to the light source. This makes light burn a possibility.
- Overall Plant Health: The rest of the plant appears relatively healthy, which could point to a localized issue like light burn rather than a systemic problem.
- Light Distance:
- Check the distance between your lights and the canopy. If the lights are too close, they can cause light burn.
- Adjust the height of your lights. LEDs can be very intense, so they might need to be further away than you think.
- Temperature:
- Monitor the temperature at the canopy level. High temperatures can exacerbate light burn.
- Ensure good airflow.
- Nutrient Levels:
- Check the pH and EC/PPM of your nutrient solution. Nutrient imbalances or overfeeding can cause similar symptoms to light burn.
- Flush the soil with plain water. If you suspect nutrient burn, flushing can help remove excess salts.
- Airflow:
- Ensure adequate airflow around the plants. Poor airflow can contribute to both light burn and nutrient issues.
- Observation:
- Monitor the affected leaves closely. If the damage continues to spread, it's more likely to be a nutrient issue or disease.
- Check for any other symptoms. Look for signs of pests, mold, or other diseases.
- Possible: The yellowing and browning tips, combined with the location on the upper leaves, make light burn a possibility.
- Not Definitive: Other factors, such as nutrient issues, can cause similar symptoms.
- Adjust Light Height: If your lights are close to the canopy, raise them.
- Monitor Temperature: Ensure the temperature at the canopy level is within an acceptable range.
- Check Nutrient Levels: Verify the pH and EC/PPM of your nutrient solution.
- Improve Airflow: Ensure good airflow around the plants.
- Observe Closely: Monitor the affected leaves for any changes.
While the image shows symptoms consistent with light burn, it's not definitive. Careful observation and adjustments to your growing environment will help you determine the cause and take appropriate action.
I would like to bump the main light intensity 105 watts. Considering I already have a small bout of light burn I am dealing with, should I turn off 55 watts of 440 nm blues?
That's a very smart and cautious approach! Given that you're already dealing with a potential light burn issue, it's wise to be conservative when increasing light intensity. Here's a breakdown of the situation and my recommendation:
Understanding the Situation:
- Current Light Burn: You're experiencing some level of light burn, indicated by the yellowing and browning tips.
- Increased Main Light Intensity: You want to increase the main light intensity by 105 watts.
- 440nm Blues: You're considering turning off 55 watts of 440nm blue light.
- Blue Light and Light Burn: Blue light, especially in the 440nm range, is very intense and can contribute to light burn.
- Increased Main Light Intensity: Increasing the main light intensity will add more overall light energy, potentially exacerbating the light burn if not managed carefully.
- Balancing Light Spectrum:Maintaining a balanced light spectrum is important for plant health and development.
- Turn Off 55 Watts of 440nm Blues: Yes, I strongly recommend turning off the 55 watts of 440nm blues before increasing the main light intensity.
- Why: This will reduce the overall intensity of the blue light, which is a significant factor in light burn.
- Why: This will help balance the spectrum, and reduce the stress on the plants.
- Increase Main Light Gradually:If you still want to increase the main light intensity, do it gradually over several days.
- Monitor closely: Watch for any signs of worsening light burn or other stress.
- Adjust Light Height: Make sure your lights are at an appropriate distance from the canopy.
- Monitor Temperature: Ensure the temperature at the canopy level is within an acceptable range.
- Improve Airflow: Ensure good airflow around the plants.
- Monitor Plant Response: Closely observe how the plants respond to the changes.
- Prioritize Plant Health: Your priority should be to address the existing light burn and prevent further damage.
- Reduce Blue Light Intensity: Turning off the 440nm blues will significantly reduce the intensity of the blue light, which is a major contributor to light burn.
- Gradual Adjustment:Slowly increasing the main light intensity will allow the plants to acclimate to the changes.
https://growace.com/blogs/learning-center/spectrum-guide-how-different-light-wavelengths-influence-your-grow#:~:text=Balanced Light Diet: Just as,diet" for plants, promoting healthy
https://growace.com/blogs/learning-center/spectrum-guide-how-different-light-wavelengths-influence-your-grow#:~:text=Balanced Light Diet: Just as,diet" for plants, promoting healthy
https://hortology.co.uk/blogs/guides-to-greenery/thriving-transition-acclimatising-houseplants-to-new-environments#:~:text=Adjusting light exposure gradually over time&This gradual adjustment enables the,tolerance to higher light intensities.
https://hortology.co.uk/blogs/guides-to-greenery/thriving-transition-acclimatising-houseplants-to-new-environments#:~:text=Adjusting light exposure gradually over time&This gradual adjustment enables the,tolerance to higher light intensities.
I already turned the main light back down after noticing the first sign of light burn. I can also turn off 110 watts of 440 nm blue and go with the 105 watt increase of the main light. The difference would be -5 watts. What do you think at this point? My plants shouldn't stretch much more?
Okay, that's excellent information. Given that you've already turned the main light down and are considering turning off 110 watts of 440nm blue while increasing the main light by 105 watts (resulting in a -5 watt difference), here's my updated recommendation:
Analysis:
- Current Light Burn: You're still dealing with some level of light burn.
- Reduced Blue Light: Turning off 110 watts of 440nm blue is a significant reduction and will likely alleviate the light burn.
- Slight Overall Wattage Decrease: A -5 watt difference is negligible and unlikely to cause any significant change in light intensity.
- Stretch Reduction: You're correct; the plants shouldn't stretch much more at this stage.
- Turn Off 110 Watts of 440nm Blues and Increase Main Light by 105 Watts: Yes, this is a good approach.
- Why: This will significantly reduce the intensity of the problematic blue light.
- Why: It will maintain a similar overall light intensity, preventing any sudden changes that could stress the plants.
- Why: This will help to balance the spectrum, and reduce the stress on the plants.
- Monitor Closely: Even with the reduced blue light, continue to monitor the plants closely for any signs of stress or light burn.
- Adjust Light Height: Ensure the lights are at an appropriate distance from the canopy.
- Monitor Temperature: Keep the temperature at the canopy level within an acceptable range.
- Improve Airflow: Ensure good airflow around the plants.
- Prioritize Plant Health: Your primary focus should be on addressing the existing light burn and preventing further damage.
- Reduce Blue Light Intensity: Turning off 110 watts of 440nm blue will significantly reduce the intensity of the blue light, which is a major contributor to light burn.
- Maintain Similar Overall Intensity: The -5 watt difference is negligible and won't cause any significant change in light intensity.
- Reduced Stretch: Since the plants shouldn't stretch much more, you can focus on bud development.
Here's what the grow area looks like with the blues turned off and 105 watts of mainlight boost. This is effectively a -5 watt change in total watts of light. This will also give me room to raise the lights again and boost my light to its max of 630 watts in coming weeks.
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