Critical Purple Auto

Today is day 50 from seeds in soil. Did a half feeding on day 46, 8 tbs worm castings, 2 tbs Dr Earth 4-4-4 and 2 tbs 3-9-4. Still using the fish shit every other watering. Things are going good other than the two that haven't started flowering. Smallest plant is 19 inches and tallest 30. It's a little frustrating, will have to find solutions later, was planning on drying in the tent. That's a problem for another day. Plants look good, no problems to report.