FloraMicro contains submicronutrients and organic buffers that stabilize the pH of the solution. It complements FloraGro and FloraBloom in secondary and major nutrients and is available in a variety of sizes. The Flora Series consists of FloraGro, FloraBloom and FloraMicro, which provide all the essential nutrients for plants. Developed by Dr. Cal Herrmann and scientists at the University of Davis. Use FloraMicro Soft water for water with low calcium levels. The key to success is the combination of all three components.