Z-InOne is a concentrated “All in One” ® dosing solution that includes all essential components for corals and other organisms to thrive. Includes alkalinity, calcium, magnesium, boron, strontium, potassium, iodine, manganese, vanadium and many other macro and trace elements. Before starting Z-InOne we recommend determining the alkalinity and calcium levels and adjusting them to the desired levels. 500ml Bottle Instructions for use Start with a daily dose of 5ml per 100l and increase 2.5-5ml per 100l per week until stability of alkalinity and calcium is reached at the desired levels. Once stability is reached test either calcium or alkalinity on a regular basis and ensure the correct dose. If 25ml per 100l is exceeded please use our 2-part dosing Z-Complete. In some instances alkalinity and calcium are consumed in different ratios. If you need to correct these please use our KH and calcium buffers.