Indoor Multi-strain Madness!

Fixed a few newbie mistakes coming into this week! I believe the leaves, especially the blue dream, were curling down because the lights were too close. I was too concerned with keeping the heat up. I slowly raised them up to the 18" they are at now and the leaves immediately stopped curling down. I also added a space heater set to 20 degrees to keep the lights out temperatures from dropping down to 16. Lastly moved to week 2 nutrients for all of them, I should've been adding nutrients sooner I believe. I also started watering less to establish a good wet dry cycle. I'll be watering once a day at most days and once every 36 to 48hrs now and then. They are looking smaller than they should but since these adjustments have grown what I think to be quite a bit! Transplanted into 5g fabric pots on day 21. They all had a good looking root ball and everything went smooth.