Suggestions on when to flower

[yesIcannabis]

These are GSC clones. Theyve been vegging for about 4 weeks. 5 gallon pots. 1K MH for vegging turned down to 75%. The node spacing is kinda high for what im used to with this much light. How much longer do you tihink i should wait till flowering. The two tall ones are 21 inches. I achieved the bushiness by super cropping them.

 

[yesIcannabis]

 

[Upinsmoke535]

Go one your available space. Your plants will grow another 1/3 or more depending on the strain . Don't out grow your space. Otherwise they are fine to throw into flower.

 

[yesIcannabis]

So my question is will flowering them now fill my available space? They probably will but id rather error on the side of them being too big. I havent had my own indoor for about 10 years and it's hard for me to judge. I think ill let them go another week and let the runt catch up.