Goldfish Bottom sitting indicates nitrates are too high
Goldfish bottom sitting due to high nitrates. Nitrates lessen the amount of oxygen in the bloodstream causing pressure. In an effort to relieve the pressure, fish press to bottom. Water pressure or weight, relieves the pressure caused by nitrates. Another symptom that accompanies goldfish bottom sitting is lack of appetite
Nitrates can be tolerated in low amounts, unlike ammonia and nitrites
Goldfish pressed to bottom
The comfort zone for nitrates is 20 to 40 ppm (parts per million)
Test for nitrates regularly
Goldfish curl to one side, due to nitrates increasing. All fish poisoned by nitrates need deep water. People often perform a large water change too quickly when they notice their fish are sick. The sudden change in water depth combined with the sudden change in nitrate worsens the condition
Nitrates are a death chamber for goldfish in water low in oxygen