Old Tank Syndrome
What is Old Tank Syndrome? This occurs in fish tanks and ponds with the following water quality parameters: pH: <6.0 Alkalinity (kH): <50 mg/L, usually 0 mg/L Ammonia: >1.5 mg/L Nitrite: >0 mg/L Nitrate: >40 mg/L The loss of buffers (alkalinity) can lead to pH swings and a pH crash. The low pH actually protects …