ReadyGro Aeration Formula™ (4 to 6 waterings daily) is specifically designed for automated hydrogardens and self-watering planters with small to midsize plants. This blend is lighter and contains higher air content than the moisture formula. It is virtually impossible to over water plants with this formula. Plants can also site in ReadyGro™ with 1 to 2 inches of water and through the process of capillary feeding, hydrate & feed as needed.