I switched the lights over to 12/12 from 19/5 at the end of this week to start the flowering phase. I added dry amendments Blood meal (1.5 tsp @ 12,0,0) Langbenite ( 2 tsp @ 0,0,22) Seabird Guano ( 7 tsp @ 0,11,0) along with 5 tsp of worm castings and 1 tsp of powdered mycorrhizal fungi. This amendment package was mixed together and stirred into the surface of the soil, then watered in with well water.