And what does this mean:
1.) Never mix multi-part nutrients neat. Always add part A and part B separately to water to avoid precipitation (fallout) of crucial elements (typically calcium and sulphur). If precipitation occurs, it could cause deficiencies in your plants as it renders these important elements unusable.
Dutch Master GOLD RANGE ONE is a single part nutrient (therefore 1 part for grow and 1 part for flower) that has be specially formulated NOT to fall out.
2.) Always try to start with a fresh reservoir / tank of nutrient solution when raising or lowering EC / PPM / CF from week to week. Therefore, when going from week 1 in grow (lights on 18 hours, off 6 hours) to week 2 in grow, ideally dump old nutrient solution and make up fresh nutrient solution at the new recommended EC / PPM / CF as per the
Nutrient Calculator or feed chart. It is important to dump old grow nutrient solution when switching to the first week of flowering nutrient solution.