yeah 4 sure its temp problems I had the same problems when I strted my first one it was arround dec too and by june I had the same problem on my second Heat is one of the biggest obsticles for an in door grower plants thrive between 76 and 84 F at 92 growth slows and at 98 it stops all togther

Good luck my friend and get the heat under control or you are gunna have the same out come

Take care LOzt