Aeration helps water

NeonFlux

Water agent
Oct 16, 2005
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What Aeration Can Do For You


Aeration is the process of adding oxygen to water. Maintaining healthy levels of dissolved oxygen (DO), one of the most, if not the most important water quality parameter, in your pond/tank aids in the breakdown of decaying vegetation and other sources of nutrients that enter your pond/tank. This breakdown of bottom silt is carried out by microorganisms at the water/soil interface and continues to proceed a few centimeters deep in the soil. This decomposition can be carried out in two ways, aerobically and/or anaerobically. Aerobic decomposition requires a continuous supply of oxygen and proceeds more rapidly as dissolved oxygen concentrations near saturation levels. The rate of degradation of organic matter in anaerobic conditions is not as rapid as under aerobic conditions, and the end products are organic compounds, such as alcohols and foul-smelling organic acids (the sulfury pond muck smell!). In other words, the decomposition is slower and less complete in anaerobic environments than in aerobic habitats where the primary end product of decomposition is carbon dioxide. So what we can learn from this is, the more decomposition we can facilitate, through the addition of oxygen with aeration, the less nutrients there will be available for algae blooms and excess aquatic plant growth.


Affects on Dissolved Oxygen


Barometric pressure, altitude, salinity, water purity, and biological oxygen demand all affect the amount of naturally occurring dissolved oxygen levels in water. The amount of additional oxygen water can hold through the aeration process is a function of temperature, altitude, and salinity. Colder water holds more oxygen than warm, warm water doesn't hold as much O2 than cold water. Water in higher elevations or with higher salinity levels has a decreased saturation level of oxygen. Once you have reached the saturation level, oxygen cannot be added without the help of photosynthetic activity or the introduction of pure oxygen.

In ponds/tanks, the introduction of oxygen via some type of aeration device can:

* Allow for greater densities of fish
* Eliminate the potential for Spring and Fall turnover
* Prevent wither kills caused by low oxygen levels
* Improve overall water quality
* Speed up the rate of organic decomposition
* Reduce the amount of phosphorus, which would otherwise be available for plant growth
* Thermally and chemically destratify the water
* Cause circulation currents that might create favorable conditions for more desirable algae to out compete blue green algae
* Decrease the severity of algae blooms and algae die-offs
* Shift the level of carbon dioxide by venting it into the air, which could limit the amount available for plants




:D Just a heads up to newbies. I hope this helps! Presenting the facts what aeration can do besides providing the water with oxygen.. :eek3:

To newbies: Get aeration for your tanks! :idea:
 
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Proper oxygen levels are important for the bacteria that process ammonia into nitrite into nitrate as well.

Very important, aeration is.

Excellent post!
 
On the reef side there is little dispute about oxygen because we tend to use much more current than fresh water and frequently use skimmers that produce huge levels of air/water surface contact. Both encourage our marine tank water to be as saturated with Oxygen as it can get.

One of the biggest problems I encounter with freshwater tanks is insufficient or bad water movement, which contributes to 'stinky tanks', listless fish, and poor efficiency of the biological filter. I tend to use a little bit of venturi action on my power-heads to force some bubbles into my fresh tank, and/or use hang on back style filters because they produce better oxygen contact with the surface.

Of course this works against those trying to keep C02 available for plants.
 
"My gosh, this is an 18 year thread, I wonder how it became so obvious"
 
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