Mr Koizumi “Active Lacto-Bac” contains a variety of beneficial components including enzymes, minerals, probiotics, lactic acids, ferment, trace elements, vitamins, and essential amino acids. It helps prevent fungal infections, fin rot, and various bacterial infections.  It also promotes faster healing of wounds and minimizes scar tissue formation. By adding lactic acid bacteria, the water's balance is maintained, pH levels are stabilized, ammonium and nitrite are bound, and the biological filter is supported. Additionally, it reduces algae growth by depriving them of nutrients, strengthens the immune system, and improves digestion in koi and other fish.