Hey I purchased the enlite ceres 780 in currently growing autos about 6 inches tall now the company said about 600 ppfd at 18 inches but I notice leaf curl and the plants just look spindeley so I have a lux meter to give me an estimate what do you think is a good lux or par for veg? And how hifh would you reccomend I hang the light and at what power?
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The manufacturer would know best. Here are what is said to be ideal PPFD for each of the stages: 200-400 PPFD: seedings, clones, and mother plants
400-600 PPFD: Veg
600-900 PPFD: Flower
I don't go by lux and don't recommend you go by lux since that only measures visible light and doesn't include all light that plants absorb. If your plants aren't currently liking how much light they are receiving, you can always increase the light distance by a few inches then see how they react. As you get more practice, you'll be able to read your plants and know how much light they can handle.