ive been using the monster bloom weeks 3-6 on my 8week flower strains with great results.. start with liquid kool bloom for weeks 1 & 2, 1/3 strength week 1, 2/3 strength week 2. then go to monster bloom 1/4 strength & increase by 1/4 strength each week, finishing week 6 at full strength. ive tried this with about 8 strains & had awesome results. good luck!