Flora Micro Hardwater
If your tap water is over 200 ppm (or contains Calcium above 70 ppm), use Flora Micro Hardwater. If your water contains 30 to 50 ppm Calcium, you can mix our original FloraMicro with FloraMicro Hardwater to create a perfect Micro blend for your plants.
Hardwater FloraMicro provides plants with proper nutrition when combined with the purified minerals in FloraGro and FloraBloom.
General Hydroponics Feed Chart - PDF format