Biomin Calcium Options:Biomin Calcium, 1 qt Used to improve the drainage

Used to improve the drainage and aeration of growing media

Heavy Duty Base -  serves as the reservoir for auto watering

Dual Arc technology brings full spectrum and offers you the privilege to grow plants from vegetative to flowering stages to maximize yields

Controller compatible (SOLD SEPARATELY)

increases vigor

Biomin Calcium Options:Biomin Calcium, 1 qt Used to improve the drainageBiomin Calcium is micronutrients chelated with amino acids. Through this amino acid chelation process, the micronutrients are more available to plants and are safer to use than inorganic minerals or synthetic chelates. Biomin is suitable for both soil and foliar applications. Available in Biomin Calcium and Biomin Iron.