Are my plants tall enough????? Help needed asap

hi-my set up-hydro tent1x blueberry (dutch passion)1x mazar (dutch passion)1x afghan (dutch passion)1x wwidow (nirvana)wilma feed system1st week flower (nutrient)2nd week 12/12 (hours)i seem to have a major problem with the height of 3 of my ladies. I have no worry about number 4, the 'blueberry' as this is at a height i think is fine for her age (2-3 ft high) BUT BUT BUT the others are barely 1ft tall athough they are very bushy- i have been without a desk fan in there for 2 weeks and also the outside heat in my area has changed alot aswell- TODAY i have put a new desk fan back in to circulate the air and also i have a heater in the tent to keep the heat up in the tent- my plants have grew 1-2 inches just today!!! I am hoping that now these two probems are sorted the vertical growth will improve?ANY ADVICE ON WHAT KIND OF HEIGHT IM LOOKING FOR WELCOMETHANKS

they will grow more keep hitting them with grow and they will stretch they might scare you how big they get. i hope you have about 7 foot of room to grow because the one you said that is 2-3 foot will double and can easily triple in size by the end.