![GH Hardwater Flora Micro Gallon (4/Cs)](http://goodgrow.com/cdn/shop/products/HGC718155-01_d8848d00-db28-4b8d-91d2-617ebbd25619_{width}x.jpg?v=1632665839)
If your tap water is over 200 ppm or contains calcium above 70 ppm, use FloraMicro® 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.