Using liquid calcium as a pH adjusting component will add more calcium to your plants' cell structure, promoting cell wall integrity. Residual Olympus Up in the soil will increase aeration, promote microbial activity by offering a food source for the soil biota, and contribute to nutrient delivery. Olympus Up may be used with Herculean Harvest for a more efficient flush, either at the end of your growing cycle, or in new potting medium to stabilize pH (Herculean Harvest is sold separately).