How often are you feeding? Every other watering? I had same problem with those nutes. I now only feed maybe once every 10 days and give Ph'd water the rest of the time. I think with my soil the constant feeding was too much.
I did the samething in my backyard. I had a pile of firewood sitting waiting for splitting, and it started growing new branches. So I cut them off the log when they were about 6 inches and stuck it in water til the roots grew.
Fresh air or an ac will help lower your temp. What are you using for lights? And how far are you keeping them from your plants? I ask cuz they look stretched. Other then that, they look nice and green.
http://www.amazon.com/gp/aw/d/B001GBOAQC/ref=mp_s_a_1_1?qid=1430141312&sr=8-1&keywords=big+bud&pi=AC_SY200_QL40&dpPl=1&dpID=51T9xosYT4L&ref=plSrch
this one doesn't say discontinued.