DIY Calcium Montmorillonite Root TabsAll natural!Made with Calcium Montmorillonite and multiple groups of marine algae. Marine algae being a premium fertilizer, used in farming, and acting as the fast acting agent in the fertilizer. Calcium Montmorillonite being a substance used by professional Koi breeders around the world as a mineral additive and water clarifier, and acting as the binding agent and slow acting fertilizer!Even safe for fish and inverts to eat! And many will choose to, if given a chance