I am a new grower. I bought what I thought was AUTOFLOWER, but turns out to be “PHOTO PERIOD”. I have 2 twins growing very well, that have been on { 18/6 ) lighting. NOW I find out I have different seeds ,am I to change the lighting to something else? They are 3 1/2 weeks old.
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Keep them 18/6 till the size you want to flip. Remember stretch. Flip to 12/12 when ready to flower. Easy peasy.
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One thing to keep in mind as well is the height. Photos depending upon the the strain can stretch 2x plus
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