Start.. Just water.. After 3 weeks start with one ml of grow.. And 5 weeks start with two ml of grow.. 6weeks start with 2mls of grow and 1 of bloom.. Week 7 start useing 3 of grow and 3 of bloom and 1 of topmax... 8 weeks full feed 4ml of grow 4ml of bloom.4mls of topmax untell flushing...