The GROW solution is formulated to support vegetative growth and will deliver vigorous, strong plants with nice healthly roots. Your plants will be as strong as possible before flowering stage. Green Haze performs well in both soft and hard water. like all twin-packs, it will need regular adjustments of the pH to maintain effectiveness.
Green Haze base nutrients come as an A+B formula. You should add your dose from the A bottle (4ml/L), give a good mix and then add the dose from the B bottle (4ml/L). The concentrated formula means there is no need to add as much to the solution as some other feeds, while you also have to deal with less bottles and won’t have to re-purchase as often.
Supplier source: https://erithhorticulture.com/product/greenhaze-grow-1l-ab/