Hello, I prefer 18/6 so that the plant also has a few hours of recovery. The pot is quite large for autos, probably even 11/15 liters was enough as the autoflowers do not have enough time to become so large. Try, especially until the roots are developed, to water only around the plant, otherwise you risk drowning it. As long as it is so small you can use very little water. All you need is a sprayer. The humidity can be raised around 65/70% for the first two weeks. Since the root system is not yet developed, the plant absorbs moisture through leaves. This way it will grow faster. Autoflowers like poorly fertilized soils. Do not give anything for the first three weeks, then eventually start with half the recommended dose. I hope I have been helpful.
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