Wedding Cake and Chemdog

For this Grow I will be using an ebb and flow system and General Hydroponics Flora series nutrients. 12/25: I started three Wedding Cake seeds and two Chemdog seeds in rock wool cubes. I used a nutrient solution of the base nutrients at 350ppm on the 500 scale ph to 5.5. 12/31: Great way to start off the new year with 100% germination. 1/2: After just a few days roots started poking out of the cubes. I then transplanted 2 Wedding Cake and two Chemdog seedlings into 6x6x6in. Hugo blocks. I had one Wedding cake seedling left over and I am going to continue growing it in the small cube to just see what happens. I feel like I may have transplanted too soon and that the seedlings could have stayed longer in the starter cubes.