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Nitrification

Aquarium NitrateNitrite

The nitrification bacteria seem to "saturate" (grow and divide at maximum rate) at ammonia or nitrite levels well below hobby test kit detection, so are growing at full speed before we can read their "food" by our kits.

 


Aquarium Microbes: Part 1: Nitrification
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Nitrification: The process by which ammonia is changed to nitrite, then nitrate, and finally nitrogen gas. See Nitrogen Cycle.

Nitrification
The oxidation of ammonia to nitrite and then nitrate by bacteria. See also biological filtration.
Nitrite ...

Nitrification - The process where ammonia is converted to Nitrite (NO2) and eventually to Nitrate (NO3).

Nitrification: This is the process in which the nitrogen cycle works. Ammonia is created by urea and decomposition. Ammonia is turned into nitites by nitrosomonas bacteria. Nitrites are less harmful than bacteria, but still pose a threat.

Nitrification: The process by which bacteria converts ammonia into nitrite and then nitrite into nitrate. This is the basis of the nitrogen cycle.

Nitrification: In any biological environment there will be a production of ammonia from normal respiration (fish release ammonia from their gills) and the breakdown of wastes.

Denitrification - The conversion of Nitrate to nitrogen gas carried out by certain species of bacteria in Anoxic conditions.
Diatom - Microscopic organism with a hard shell that remains after the death of the organism.

Nitrification The process by which toxic nitrogenous compounds are converted by aerobic bacteria into less harmful substances, e.g. ammonia to nitrite to nitrate.
Encyclopedia 1.0 by Rebecca Smallwood ...

Nitrification - The process by which Nitrite (NO2) is converted to Nitrate (NO3).
Nitrobacteria - The bacteria which is live in a biological filtration system that converts Nitrite (NO2) in to Nitrate (NO3).

In Nitrification, we have:
Animal waste (ammonia) is converted by NitrosomonasNitrites is converted by Nitrobacteria to → Nitrates
What Happens When You Keep Fish In Tanks?

The nitrification phase handles the "conversion" of NH3 to NO2- and NO2- to NO3-.

TIME SCALE OF NITRIFICATION
The process of cycling a tank can be speeded up by seeding. This entails the addition of nitrifying bacteria to the tank. Gravel or other media from an already established tank is one source of this seed.

Call it cycling, nitrification, biological cycle, startup cycle, break-in cycle, or the nitrogen cycle. No matter what name you use, every newly set up aquarium goes through a process of establishing beneficial bacterial colonies.

] * Nitrification will occur only with sufficient oxygen and ammonia. * Denitrification occurs under low aeration conditions, which is unhealthy for plant roots (they can't grow or take in nutrients without respiring).

Nitrate Chemically expressed as NO3-, Nitrate is the final byproduct of the complex series of bacterial based chemical processes known as nitrification (see below) that cycle organic waste in the aquarium.

Further nitrification by Nitrobacter spp. produces Nitrates (NO3־) that are used from plants as a fertilizer along with other radicals like Phosphates (PO4 ־³) and Silicates (SiO4-2).

VERY FEW newbies to aquarium keeping even know about the nitrification cycle, and many who have had tanks in the past and are about to start a new one don't even know about it, and simply assume that losing fish in the first few weeks is "normal", ...

Two specific groups of bacteria have long been held to be responsible for the nitrification stage of biological filtration: Nitrosomonas sp. for oxidation of ammonia to nitrite and Nitrobacter sp. for oxidation of nitrate to nitrate.

Aquarists report good nitrate control in live rock systems, which, though not well understood, probably involves the denitrification of the nitrates within the interior of the rocks.

In nature, all of the nitrates produced by bacterial nitrification are consumed by plants, algae, other species of bacteria, and other organisms.

This usually results in a high concentration of nitrate (due to ammonification and nitrification) and phosphate (due to the release of phosphates in the organics).

Live rock produces a more natural environment for the fish and also aids in nitrification and denitrification. This implies that the live rock is more that just a decoration, it is actually part of the filtration system.

Carbon dioxide is present in aquariums as a byproduct of fish respiration and nitrification, and dissolved in the water from the atmosphere. Carbon dioxide levels should range from 5-15 Mg/l, once the level surpasses 20 Mg/l, fish may be harmed.

Some call it the biological cycle, the nitrification process, new tank syndrome or even the start-up cycle. They all are referring to the same cycle - The Nitrogen Cycle.

In aquaria-speak, the ``nitrogen cycle'' (more precisely, the nitrification cycle) is the biological process that converts ammonia into other, relatively harmless nitrogen compounds. Fortunately, several species of bacteria do this conversion for us.

The layer of 'mud' becomes a low oxygen enviroment allowing various anoxic bacteria's to perform de-nitrification.

As an aquarist, you understand the nitrification cycle and practice a number of techniques to maintain water quality and equipment. This is a lot to expect from a helper, unless they share your hobby too.

To do so, the variables for waste production rate, nitrification efficiency, gas exchange rate at the water surface, and many others would need to be determined.

Plants -- taking an active role in the nitrification process, plants help to maintain a relatively neutral pH by absorbing dissolved salts and waste products.

its quite dense and liiks alot like concrete, this rock is too dense to be useful for denitrification as the water cannot penetrate but its useful for building bases and saving cash if all live rock isn't wanted or if your stocking a very large ...

This is the result of metabolism, photosynthesis, nitrification, excretion, and other various long words. PH is often controlled with the maintenance of the calcium and alkalinity levels. Most tropical mini reefs are kept in the pH range of 8.1 to 8.

The disease could be cure by a breakdown (oxidation of the ammonia by Bacteria in the aquarium itself or more effectively by a biological (undergravel) filter through the process called Nitrification as shown below: ...

They are also not real good for planted aquariums; the roots have a hard time thriving with the filter plants just below the gravel (although you add potted aquarium plants to aquariums with UGFs). UGF are also poor at denitrification, ...

These bacteria work to release the captured Nitrogen (from the NO3) and distribute it back in to the atmosphere, thus completing the Nitrogen cycle. The process of de-nitrification does not replace the need for regular water changes.

See also: Water, Fish, Aquarium, Nitrate, Bacteria