Prefered pH in Koi Fish Ponds

Koi fish are fragile creatures that need water with a precise ph level. Anywhere between 6.8 and 8.5 ph level is acceptable. However, koi fish will do best in water with a 7.5 ph level.

Unfortunately, many things can disrupt this careful ph level of your koi, including inadequate maintenance, pond plant development, or items such as fertilizer going into the pond.