This is what Plant Magic says to do with your Bloom Boost dude
Soil
Add to the nutrient solution at the rate of 1ml per litre from the start of week 4 through to the end of week 7 in the fruiting stage
Hydro & Coco
Add to the nutrient solution at the rate of 2ml per litre from the start of week 4 through to the end of week 6 in the fruiting stage
Hope that helps dude :Sharing One: