What the Water Is Trying to Tell You

She tested her water, everything looked perfect… four days later forty fish were dead overnight. No warning at feeding time, no cloudy water, no obvious smell. The tank looked fine — right up until it wasn’t. In Episode 4 of Farm Fresh, we decode the invisible language of your tank: ammonia, nitrite, nitrate, pH, and dissolved oxygen — and how tiny changes in those numbers quietly decide whether your fish make it to harvest or not.