ssh geeting too tall

ssh is 3 weeks into flower they were vegged for bout 3 wks , so didnt think they would get too tall but seems they may, their about 4ft high so how much more will they grow? just need any input cos only got about another 2ft left and their be headbutting the 600w hps, help????

if she gets too tall, you can always do one of two things.. i prefer to supercrop my tall ladies, but you can also tie them down for the same end result.. pick which ever you think you like, and go watch a few videos on youtube about it and get a feel for what your doing, and then go ahead and do it to your lady...
you can supercrop as often as you like, and the plant will recover pretty quickly and doesn't seem to have any negative results imho..

cheers mate