An anaerobic organism or anaerobe is any organism that does not require free-standing oxygen molecules for growth.
Anaerobic: A lack of oxygen. Anaerobic zones in an aquarium are areas where no oxygen is present such as inside live rock or under sand or gravel. Anaerobic bacteria live in these areas where they transform nitrate into nitrogen gas.
Anaerobic Bacteria
This is bacteria that can live without the presence of oxygen, or bacteria that does not require oxygen.
Anaerobic A term used to describe an organism that lives in an environment with little or no oxygen.
Apical bud The principal growing point of the stem.
Artemia Known as brine shrimp.
Anaerobic: Living without oxygen. This is a living situation most commonly associated with "bad" bacteria.
Anal Fin: The fin which lies beneath the body, just in front of the caudal fin.
Aerobic: Living with oxygen.
Anaerobic - An area of water without any dissolved oxygen.
Artemia - The brine shrimp.
anaerobic
"Without air". Refers to an area with no dissolved oxygen - these can build in pockets between rock without adequate circulation, or under fine grained substrates unless you have a burrowing organism to stir it up.
Anaerobic
Basically, a lack of oxygen. Anaerobic zones in an aquarium are areas where no oxygen is present such as inside live rock or under gravel.
Anaerobic - Existing or active in the absence of free oxygen.
Anal Fin - Fin just behind anal opening.
Annual - See Killifish.
Anaerobic conditions
Also referred to as Slime or Smear Algae, Blue-Green Algae is not truly an algae. Instead it is Cyanobacteria, an the organism that lies somewhere between algae and bacteria.
Anaerobic - Areas of the aquarium where no oxygen is present such as live rock or under the substrate. Anaerobic bacterial uses these areas to convert Nitrate (NO3) in to Nitrogen gas.
· Anaerobic = the ones that do not need atmospheric air to live, reproduce, function and thrive
· Anal = the region of the anus (as anal fin)
· Androgens = Male (genetic) hormones.
*Good anaerobic filtration via live rock, live sand, or mud filtration.
*Plant refugiums and or good plant and green algae growth in the aquarium.
So, whilst anaerobic areas and the bacterial strains therein are beneficial to nitrogenous waste levels, there is a degree of risk in their overabundance.
Below 7.0 it is
present in the form of ammonium which is not toxic.
Ammonium - (NH4) A by-product of fish waste in water below a pH of 7.0.
Anaerobic - An area of water without dissolved oxygen.
The latter can be done by using bacteria of Pseudomonas species living in nearly anaerobic conditions in very slow flow and long-path filters or by ion-exchange (see Chemical Filtration). Both are not at all cheap or very easy to tune.
anaerobic Literally without air, refers to an area where there is no dissolved oxygen in the water.
It has been found that certain aquatic plants can use O2 from photosynthesis for root respiration by supplying it through hollow (gas filled) passages in the roots, but most net people seem to agree, despite this fact, that anaerobic conditions are ...
As you might suspect, these anaerobic pockets can form in the gravel of tanks with other types of filtration, and, in fact, they are more likely to because the filtration system is not going to be pulling oxygenated water through the gravel.
By the same token, control of DO is also critical in the support of anaerobic and facultative bacteria, such as those found in denitrators or phosphorus 'luxury-uptake' reactors.
In nature, when animals expel their wastes and plants decay, anaerobic bacteria in the environment break down waste to harmless nitrogen that is released into the air through the ground and water.
Smaller substrate particles will tend to clump and compact along with mulm and render the substrate anaerobic. Bacterial action in anaerobic substrate will produce hydrogen sulphide, resulting in a smelly black mess.
Chemoautotrophic bacterial growth will occur in the absense of oygen, so a thick layer (2"-4") is often necessary in separating the high oxygen environment of the reef to the completely anaerobic environment for bacterial growth of the plenum.
If detritus, especially of organic nature remains hidden within the tentacles it will decay and give rise to anaerobic activity and often leads to bacterial infection ...
The fermentation is an anaerobic process and opening the bottle will admit oxygen and stall the fermentation. The yeast will have to use up all the oxygen and then begin fermentation again.
If black, foul-smelling, slimy ooze is released or water takes hours to clear, the tank is already in trouble, as anaerobic decay is taking place.
The results of this no-oxygen ( called anoxic [ see Jaubert System ] or anaerobic, meaning low or without oxygen ) environment would be hydrogen sulfate ( that rotten egg smell ), and the bed would eventually 'clump' together and become solid.
Removal of your undergravel (or extra thick gravel) will omit the chance of anaerobic bacteria bloom that could cause a complete wipe out of the tank.
Secondly, this compacting can lead to reduced circulation and pockets of anaerobic (not requiring oxygen) bacteria thriving, creating toxic gas bubbles.
For the time being, simply stir the sand that you can reach without dismantling the tank. There shouldn’t be a problem with anaerobic bacteria if you perform that simple task regularly, ...
Denitrification: Breakdown of nitrates by anaerobic bacteria into other forms.
In the nearly anaerobic cells of the sponge, nitrites are converted to nitrogen by Pseudomonas and other bacteria (however, Thiel and others have been very critical of this method of denitrification); ...
If your sand layer is too deep it is likely that you will develop pockets of anaerobic bacteria that can pose problems.
The sand eventually developed sizable anaerobic pockets, which led to water suffused with a sizable amount of hydrogen sulfide.
Scientists solved this problem by allowing these nitrates to turn into nitrogen gas (N2), thanks to the anaerobic bacteria which survive at the bottom of the tank, where the oxygen levels are low.
Just remember that there are 2 main phases in the nitrogen cycle :
1) nitrification, handled by nitrifying bacteria in an aerobic (with oxygen) environment.
2) DEnitrification, handled by denitrifying bacteria in an anaerobic ...
scales have little or no proection from sharp edges. I have personally had a kuhli slit itself open gills to gizzard on a too sharp rock. Given a sand substrate, kuhlis will burrow, and can be relied upon to keep the sand free of anaerobic pockets.
Denitrification: This is the process where nitrates are converted to nitrogen gas in the absence of oxygen (anaerobic conditions).
 See also: Water, Aerobic, Fish, Aquarium, Bacteria
  
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