Im really sorry I have to ask so many question on this Forum, but Im New to this growing thing ( only my second grow). my plants are 9 weeks old. 41 inches tall, and doing VERY WELL.!! Lots of Big fan leafs etc. The grow tent only has 21 inches of room left to the top, so my plant can only grom maybe 15 inches more before they get t close to the grow light. I dont know what strain it is or anything, as a few seeds got mixed up..So TYIA for the info. scott
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I flip my photo period plants at week 4-5 after I top above the 4th or 5th node. You’re going to experience some issues as the plant will double to Tripple in height during the stretch. You may want to top the plant now or super-crop them 
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Totally agree with @OGIncognito , he has you covered, and yes bare minimum it should double in height. I don’t think topping alone will leave you enough room if you only have 15” to your lights, super cropping might be your only answer
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What is 'Super Cropping" and how do you do it.?
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Video by @kaptain3d
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Thank you. Very interesting.
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It’s typically used in “oh sh!t” moments or for training in general. I like to use the video Kap made because it’s straight to the point.
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Don’t worry about asking questions on this site, that’s what it’s for​:wink: You’ll get steered the right direction on here 
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