For fans of Aptus' Premium program, purchase both together and save!

• Base is the only base nutrient product you need to use from the beginning of vegetative growth until the end of the fruiting and flowering phase. Compared to other competing products requiring you to purchase up to four separate bottles, Base is a 1 part, liquid fertiliser for both grow and bloom.

• Calcium and magnesium are easily locked up or combined with other minerals in the growing medium forming what we call “junk salts”. This active behavior can be a problem when trying to dial in supplementation of calcium and magnesium for your plants.

• Aptus takes a unique approach in that our calcium and magnesium are chelated with natural amino acids much like Peakboost and Finaleboost. This makes the normally very open minerals be more or less directly available for assimilation into the plant. Whereas most other calcium and magnesium products are classic mineral salt formulations, Massboost functions as a pure source for the plants’ optimum and continued health.