MassBoost is an organo-mineral plant booster that prevents Calcium (Ca) and Magnesium (Mg) deficiencies while stimulating powerful fruit set and development. 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 Plant Tech 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 incredibly open minerals be 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. Since there is next to no interaction with outside products, you can use Massboost for just 3 weeks in the bloom phase: weeks 3, 5, 7, and an optional fourth week in week 8. Click Here To Learn About Aptus - Aptus Bible Click Here To Learn Download Manual - Aptus Manual Click Here To Download Feed Schedule - Aptus Feed Schedules