Your light settings will change spectrum with each stage.
For stage 1, 2 and 3, your lights will be on for 20 hours a day. Your young plant will sleep for only 4 hours during these stages.
Once stage 4 (Transition) arrives, the lights spectrum and photoperiod both change drastically. You will now see more red in your spectrum, and notice your lights are now on for 12 hours a day and the plant sleeps for the other 12. This is the beginning of the flowering stages 4, 5 and 6.
Please be aware that this is specific to photoperiod dependent seeds. They must have 12 on/12 off to begin flowering.
Example: Generic - Hybrid
This recipe has 3 vegetative stages and 3 flowering stages. We have just entered the early germination stage, and our little plant is 11 days old. It has another month, or, 27 days left to grow before we flip to 12 hours of darkness each day so it starts producing flowers.
Our goal is to have the plant as tall as the second fan on the back wall when it moves into stage 4 (Transition). If you top or fim your plant, add a week to stage 2 or stage 3. This is because it will stress your plant a bit, and it needs time to recover to continue it's growth.
This is what a recipe's schedule looks like.
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