The Koi Pond

Why a pH Level of 6 is Optimal for Koi Ponds Maintaining the right pH level in your koi pond is crucial to the health and wellbeing of your fish. The pH level, which measures how acidic or alkaline the water is, can affect the fish’s skin, gills, and overall immune system. A pH level of 6 is optimal for koi because it replicates the natural environment they live in, allowing them to thrive and grow to their full potential. … »