Nirvana Mystery Seeds Round 2

Think I missed a week here. I really went after these plants hard and defoliated a bunch an cut some growth and they have grown for the past two weeks. I have finally seen some growth added by some of the buds. These are mystery seeds so I am not sure what I am growing but they are two vastly different plants. They both appear to be sativa's but the one has nice lush lower growth with denser buds. The other really wants to spend energy in height and the buds are tiny almost male like buds. Not sure what happened but there is burn on many of the leaf tips, I thought that the nutrients were in my line of 400-500 PPM according to my measurements but something was over what the plants could use. I fed these plants a full nutrients dose on 12/10 and only get the cal sulphur in between feedings. I am guessing but probably have 3 more weeks before I start to flush but we will see.