Leaves

The appearance of dots on plant leaves and the curling upward of leaf tips can be indicative of several potential issues. While you mention that you water them with fertilizers every day and that the output is always 100 ppm less than the input, there are still several factors to consider when troubleshooting this problem: Nutrient Imbalance: The difference between input and output ppm (parts per million) could indicate that the plants are not effectively taking up nutrients. This may be due to an imbalance in the type or ratio of nutrients in the fertilizer. Excessive salts or imbalanced nutrients can lead to leaf issues. Overfertilization: Watering plants with fertilizers every day can lead to overfertilization, causing nutrient imbalances and potential toxicity. Some plants may be more sensitive to excessive nutrients than others. Salt Buildup: Frequent fertilization without proper flushing can lead to a buildup of salts in the soil, which can be harmful to plant roots and interfere with nutrient absorption. Water Quality: The quality of the water you use can affect plant health. If the water has a high salt content or other impurities, it can contribute to nutrient imbalances and plant stress. Disease or Pest Issues: The appearance of dots on leaves may be a sign of disease or pest infestation. Check the leaves for signs of pests, like mites or aphids, and inspect for any fungal or bacterial issues. Environmental Factors: Consider the environmental conditions in which the plants are growing. Factors such as temperature, humidity, and light can influence plant health. To address this issue, you might want to take the following steps: Test your soil and water to determine their nutrient content and pH levels. This can help you identify any nutrient imbalances or water quality issues. Adjust your fertilization regimen based on the specific needs of your plants. Not all plants require daily fertilization, and some may have specific nutrient requirements. Ensure proper watering practices, and avoid excessive or uneven watering, which can lead to nutrient imbalances and salt buildup. Inspect your plants for signs of pests and diseases and take appropriate measures for control if necessary. Consider the overall environmental conditions to make sure they are suitable for the type of plants you are growing. It's essential to diagnose the exact issue with your plants to provide the most effective solution. If the problem persists, you may want to consult with a local nursery or a plant expert for a more accurate assessment and guidance tailored to your specific plant species and growing conditions.

Since you are growing in coco. I can tell you it is a few things. 1 your ph is swinging, 2 Coco needs to stay wet constantly. Ph 5.8 in. 5.8 out in run off. Lots of drainage and irrigation needed. Coco is a high maintenance grow. I have done Coco grows for years.

Light burn or/and excess of potash from look of burn.