Can Dirt Affect A Koi Fish?
Can Dirt Affect A Koi Fish? Ammonia—this is the first byproduct of bacteria breaking down organic waste. Even in low concentrations (as low as 0.25 ppm) can kill your koi. The levels should be at 0.0ppm. Ammonia is more toxic at higher pH levels. Do koi need clean water? No, koi fish care is not