High Level Nitrates

In very high levels nitrates can become dangerous to fish. HIgh nitrate levels in contact with direct sunlight will result in algae blooms that remove oxygen from the water and can kill over organisms inside. Nitrate levels should be between 20 and 40 ppm to remain in a safe range. Consistent water changes can decrease the amount of nitrates in one’s tank. To test the nitrate level in your tank, use a test kit, and add 10 drops of each reactant