I have started adding superthrive at a rate of about 1/8 tsp per gallon (it says 1/4 for active development) and the plants all have f'd up new growth. The plants in flower haven't gotten it (they are getting supplements that said not to be used with superthrive) and they don't have the same problem - could I just be using too much? You can see pics at the end of my signature thread. And some others here. Thanks and glad it works for you guys - I guess I'll back off to 1 drop per gallon after I give them a break.