Ppfd for all stages of autoflower growth?

The ideal PPFD (Photosynthetic Photon Flux Density) for all stages of autoflower growth can vary depending on the specific needs of your plants and the type of light you are using. Here are some general guidelines for different stages of growth: Seedling Stage (0-2 Weeks): Seedlings require lower light intensity to avoid stress. PPFD in the range of 200-400 µmol/m²/s is generally sufficient during this stage. A light schedule of 18/6 or 20/4 (on/off) hours is suitable for seedlings. Vegetative Stage (3-6 Weeks): As your autoflowering plants enter the vegetative stage and start developing more foliage, you can increase the PPFD to 400-600 µmol/m²/s. Maintaining a light schedule of 18/6 or 20/4 is appropriate for vegetative growth. Flowering Stage (7+ Weeks): In the flowering stage, autoflowers will benefit from higher light intensities to support bud development. A PPFD range of 600-1000 µmol/m²/s is recommended. Some growers may even go higher in the later flowering weeks, but be cautious not to cause light stress. Continue with a light schedule of 18/6 or 20/4. It's important to note that different types of grow lights may have varying PPFD levels at different distances from the canopy. The specific distance will depend on the wattage and efficiency of your light. You should use a light meter to measure the PPFD at the canopy level to ensure you're providing the right intensity. Your 20/4 light schedule is generally suitable for autoflowers, as they do not rely on a specific light cycle to trigger flowering. However, a 18/6 schedule is also commonly used and can be slightly more energy-efficient while still providing sufficient light for growth. Remember that these are general guidelines, and the ideal PPFD can vary depending on the genetics of your autoflowering strain and the specific light you're using. Regularly monitor your plants for signs of stress or light burn, and adjust the light intensity and schedule accordingly if needed.