Curios to see how your twins will do .
What read about Autos is that 12/12 will take much longer will be interesting to see what you discovers.
I can say that mmy 3 auto short ryders lived in 12/12 from the beginning......they are a 6 to 7 week from seed
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![Smile :) :)](/community/styles/420style/smilies/emojione/smile.png)
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Oh and Reg....i grew one of those auto afghans as well.....i did it in 18/6......my humidity over the summer stayed close to 60% or higher and she came through just fine so as long as your rh is below 60% most of the time then i think you should be fine......you have good airflow in there anyhow
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