Posted: 2007.01.03(Wed)11:18 Post subject: safe levels of ammonia, nitrite and nitrate Hi guys! One Way to Look at Nitrate. I have a very small 2.5 gal tank that I want to put 3, no more than 4 tetras or glofish. The plants So, in a stocked tank, the level should read 0 ppm (parts per million). A nitrate (NO3) level below 40 ppm is considered safe, but lower is better. Most freshwater fish can tolerate levels of 100 mg/L for short periods of time without significant problems. 0.25 mg/l) are sufficient to cause stress in some sensitive species under certain conditions. When nitrite levels are too high, the fish in your tank could become poisoned and may, in effect, suffocate as a result of the nitrites binding the hemoglobin in their blood to prevent it from carrying oxygen. Graph of ammonia levels. Immediate action is required if high nitrite levels persist after seven to ten days. The pH is 6.6, ammonia, nitrates and nitrites are all 0. Nitrate is produced by the aerobic bacterial nitrification of nitrite. If the level of nitrites is still high, you might need to install a … There are 4 goldfish in all.One was born in my aquarium and is now around 7 inches long. Additionally, tap water used to fill the aquarium may contain nitrate in it. While high nitrate levels are dangerous to saltwater fish and invertebrates, freshwater fish are very tolerant of high nitrate levels. Levels exceeding ten to twenty ppm are lethal over a period of time.

But nitrates is different. Nitrite (NO2) should always be zero. Return to Water Parameters Menu Predicate .

A few things that will reduce nitrate are feeding no more than the fish actually eat in a couple of minutes, changing 25 percent of the water every week, and avoiding overcrowding. What nitrite levels are acceptable in your aquarium? All discussion of nitrate need to recognize that a scientist’s 10 ppm of nitrate converts to 44 ppm of nitrate per the hobbyist’s API test kit.

One of the most identifiable symptoms of nitrite poisoning is brown, … It is “acceptable” that we’re discussing here, so depending on your setup and fish species the answer can vary. However, there’s a universally safe nitrite reading for any aquarium out there: Generally, the safe level of nitrites in an aquarium is … Yep, you read that right… Nitrites are pretty bad news. Do a large water change to dilute the nitrite levels. The toxic ammonia is converted by beneficial bacteria in the aquarium to nitrite, which is also toxic to the fish.

In the United States, drinking water may have nitrates as high as 40 parts per million (ppm). I have been keeping fish for about four years and I'm not new to the nitrogen cycle, I understand how it works, but I cannot answer all the questions my sister has asked me for her A level … Actually, to have nitrates in the water is good because of the plants. The ideal nitrite level for a freshwater tank as recommended by the Ornamental Aquatic Trade Association (OATA) is 0.2mg/l or less. I have not seen the ammonia level spike as I would expect, so although the tank has been "set up" for nearly 2 weeks, I think the … Get a nitrite test kit so you know where you stand!

This will kill off your nitrifying bacteria (the brown mess) in the filter. Even fairly low nitrite levels (e.g.