Black Dog LED Phytomax 2 400 Kit Grow #2

Veg day 47 I transplanted 2 Blue Dreams & 1 Sweet Tooth into 5 Gal Smart Pots. I put 1 Blue Dream into a 3 Gal Smart pot. This was my first use of a smart pot and I want to see if the Blue Dream grows any better in a 5 gal vs. 3 gal. On day 43, all 4 looked really bad and drooping. I fed on day 44 and they all perked up 100%. At this point I am guessing 10 weeks of Veg as they are growing slow. Perhaps in the larger pots they will grow faster. However, in my transplanting I did not notice any roots at the bottom of the smaller pots as I did with my 1st grow of Auto flowers. I jacked up the 3 Gal pot to the level of the 5 Gal pots so all will get the same light. When I watered in the new pots I used Nutrient RO Water. I am seeing some leaf tip burn so next feeding will RO water only.