Mironekuton Natural Mineral StonesThe original Mironekuton stone from Japan is a mineral rock, 100% natural and without additives. Due to its manifold beneficial characteristics it is highly popular with Japanese shrimp breeders and plant tank keepers, especially in combination with soil subtrates, as it significantly enhances the all important microbiology (bacteria, accompanying fauna). Mironekuton is used as mineral supplement and water conditioner during the cycling phase of the