Carbon dioxide (CO2)
Also called Carbonic acid gas, Carbonic anhydride, dry ice (when solid).
This is a gas given off by all plants at night. CO2 is absorbed by plants during photosynthesis.
Carbon dioxide derives from the respiration of fish, plants, and bacteria. Stirring the water enhances its oxygenation, thereby reducing the levels of carbon dioxide in the water, and passing it into the atmosphere.
Carbon Dioxide supplementation need not be complicated or expensive, and give plants an amazing boost in a tank with even moderate amounts of light, (approximately 2 watts per gallon).
Oxygen and carbon dioxide
While the air contains 20% oxygen, the most oxygenate waters rarely contain 1% oxygen. The fish have some organs, branches, allowing them to extract the most oxygen dissolved in water.
One of these is the increase of carbon dioxide in well sealed homes that do not have a fresh air intake installed on the heating and air conditioning systems. This compounded by the lack of an exhaust fan to pull out stale air.
Carbon Dioxide
Produced as a result of respiration by the fish and other aerobic organisms (including plants) in the system. The amount of carbon dioxide produced is directly proportionate to the oxygen consumed.
Carbon Dioxide
Carbon dioxide is another gas present in water as a byproduct of the respiration of organisms in the aquarium. During photosynthesis, plants require carbon dioxide.
Carbon Dioxide
Carbon dioxide can be used to euthanize fish. Alka Seltzer is a popular source for carbon dioxide to be released in water.
Carbon Dioxide: Carbon dioxide is an extremely important plant nutrient. Plants need it for their photosynthesis processes to provide themselves with food and energy, and therefore they must have carbon dioxide to survive.
Carbon Dioxide - (CO2) Used by plants as a nutrient. Can also be used to lower the pH
of water.
Carbonate Hardness - See Alkalinity above.
Chemical Filter - A filter that utilizes a chemical media such as carbon to clean the
water.
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Carbon dioxide (CO2): The gas CO2 is a necessary nutrient for photosynthesis, which in turn generates molecular oxygen (O2). CO2 is a biproduct of respiration. The higher the dCH, the lower the (Co2).
Carbon Dioxide (CO2) - Absorbed by plants as a nutrient. Can also be used as a buffer to lower the pH of aquarium water.
Carbonate Hardness - See Alkalinity above.
Carbon dioxide(Co2) Important plant nutrient. The higher the dCH the lower the (Co2). For most aquarium plants a level of 4-6 dCH is ideal.
Carpels Female sex organs. They contain the Ovules which become seeds when mature.
Carbon Dioxide generators. In tanks with strong lighting (over 2 watts per gallon) and the resulting rapid plant growth, carbon dioxide can soon becoming a limiting factor.
Carbon Dioxide: It is a molecule known as CO2, which is a biproduct of respiration. Plants require CO2 to photosynthesize, which generates molecular oxygen.
Caudal Penduncle: The long, narrow section which leads into the caudal fin (tail).
Carbon dioxide (CO2)-Measured by monitoring pH values (see above). Tested with various kit's or devices. A test of special interest to freshwater plant aquarists, and saltwater reef keepers.
carbon dioxide
Carbon dioxide (CO2) is vital to plants. Injection of co2 (using CO2 reactors or DIY systems) also softens water.
Carbon Dioxide Dissolved Inorganic Carbon (DIC) in freshwater occurs as four different species in equilibrium with one another. The four species of DIC are; carbon dioxide (CO2), carbonic acid (H2CO3), bicarbonate (HCO3-), and carbonate (CO3=).
Carbon dioxide generation by "electrolysis?" of Oxalic acid (ethanedioic acid)
by Denis Daly (Tue, 08 Sep 1998)
Oxalic acid
by "Richard J. Sexton" (Tue, 8 Sep 1998) ...
Carbon Dioxide(CO2) is a gas which is highly soluble in water in relation to the other two important gases found in H2O, specifically oxygen and nitrogen.
Carbon Dioxide Enrichment
To photosynthesize plants need light, CO2 and nutrients. If either of these is deficient the plant will not grow and photosynthesize properly.
Carbon dioxide
This is a last resort since the dose is difficult to control and it is easy to overdose and cause death by hypercardia.
1) Anesthesia : Add 200 - 400mg/ l (by bubbling the gas through water) - Anesthesia should occur within 5 minutes ...
Carbon Dioxide: Vigorous movement of the tank water, powerful skimming aeration and current will reduce CO2 to levels that are not acting as too much of a nutrient source.
CO2 - Carbon dioxide. Used in Planted Tanks to maximize plant growth.
Ammonia and carbon dioxide suffocating fish in container.
White water lines. Plants die, fish have frayed fins.
Hard water supply. Seashells or limestone in tank.
The amount of carbon dioxide being introduced needs to be closely monitored so that excessive carbon dioxide is not leaked into the aquarium. If this occurs, a constantly low pH reading will result.
carbon See activated carbon carbon dioxide The gas CO2 is a necessary nutrient for plants, and can be used to lower the pH. chemical filtration These filters use chemical processes to clean the water.
Temperature also determines the amount of dissolved gases (oxygen, carbon dioxide, nitrogen, etc.) in the water. The cooler the water the more soluble the gas.
The bubbles are rising too fast to give off oxygen or absorb carbon dioxide
Aeration ornaments
Aeration ornaments are used to bring some action into the tank.
Successful plant growth requires a balance of light, nutrients, trace elements, and carbon dioxide (CO2).
One safe way to lower pH WITHOUT adjusting KH is to bubble CO2 (carbon dioxide) through the tank. The CO2 dissolves in water, and some of it forms carbonic acid. The formation of acid lowers the pH.
Gas exchange - where the water dissolves oxygen and other gases from the air and releases excess carbon dioxide and other gases to the air - occurs over any and all surface area where the water has contact with air.
Carbon Dioxide
Limiting carbon dioxide (CO2) can help too. If you have a heavily planted tank, obviously, limiting CO2 isn't all that desirable.
Surface area is where gas exchange (oxygen in, carbon dioxide out) takes place, and the bottom is where many territorial fish set up their home turfs. Often the more decorative aquarium shapes have relatively low surface area.
As it circulates, it supplies tissues with oxygen and picks up waste carbon dioxide. As the carbon dioxide rich, deoxygenated blood is returned to the gill lamellae, the toxic carbon dioxide diffuses out and new oxygen diffuses in.
To give our water high oxygen saturation we must break it up into small particles, which will absorb oxygen and in exchange release carbon dioxide.
These compounds form a skin which inhibits the exchange of gases such as carbon dioxide and oxygen from transferring between the water and the atmosphere. An Overflow system is a box or pipe placed in the corner or middle of the back of the aquarium.
Air pumps are employed to adequately oxygenate (or in the case of a heavily planted aquarium, provide carbon dioxide to) the water.
Carbon dioxide: Known as CO2, is the biproduct from respiration. If you wanted to keep real plants in your aquarium, CO2 is one of the elements needed - Photosynthesis.
Catfish: Click here to see pictures and info.
Chlorine: Aggh!! ...
This allows carbon dioxide to be exchanged for oxygen. Oxygen is important for the fish so they don't suffocate and also for the beneficial bacteria we want to grow in the filter.
During daylight hours they take in carbon dioxide and give off oxygen, thus contributing to a healthy habitat. Keep in mind that at night this process reverses.
Basically, there are three secrets to having a successful planted tank: light, CO2 (carbon dioxide gas), and nutrients. This article is about CO2, a very important part of a planted tank.
Animals breathe in oxygen and give off carbon dioxide. Plant absorbs carbon dioxide and give off oxygen as part of there process of photosynthesis. Animals eat plants and animals wastes, feed plants.
Zooxanthellae can also increase the calcification of hard corals - by removing carbon dioxide the zooxanthellae can aid the coral in its production of calcium carbonate, ...
Water Circulation and Aeration -- without adequate aeration, carbon dioxide can remain trapped in the water and lower the pH (make the environment acidic).
They readily assimilate carbon from bicarbonates (as opposed to carbon dioxide) and thus do exceptionally well in harder water; some can even tolerate brackish water that is not too high in salt.
Over planted aquariums can raise the pH because the plants rob the water of too much carbon dioxide;
as a result calcium bicarbonate, which usually buffers the pH is converted to insoluble calcium carbonate.
Both tanks hold roughly 180 gallons, but the taller tank will only be able to support half as many fish. Why? Reduced surface area restricts the exchange of gases in the water including oxygen absorption and the release of carbon dioxide.
 See also: Carbon, Water, Fish, Aquarium, Plants
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