House & Garden Magnesium Boost
Magnesium Boost supports longer vegetative growth and larger-leafed varieties by supplying additional magnesium and nitrogen. Magnesium and nitrogen are central components of chlorophyll, the plant pigment that absorbs light and harbors photosynthesis.
![House & Garden Nutrient Calculator](https://media.hydrofarm.com/webassets/productdetail/HandG_Nutrient-Calculator.jpg)