Thursday, November 29, 2018

Fish Tank OXYGEN Management

The majority of aquatic organisms need oxygen and must obtain it from the surrounding water. The oxygenation or aeration of the water is therefore, of fundamental importance in any aquarium, especially as the oxygen supply is one of the factors which may ultimately limit the capacity of a particular volume of water for carrying fish.
The oxygen dissolved in water comes from two main sources: the atmosphere and green plants. The actual content is a function of temperature, salinity and atmospheric pressure. Low temperature, low salinity and higher atmospheric pressure favours more gas content{{thereby more oxygen}} in the solution (water medium).
Aeration: Continuous aeration is very good husbandry since it mixed the water, supplies the oxygen for the fish, removes carbon dioxide and maintains a constant temperature throughout the tank. Many cheap air pumps are available in the hobby trade, though they are often noisy, are of limited power and many frequently fail. If only one or two tanks are required, such vibratory diaphragm pumps are acceptable, but a spare pump and several replacement diaphragms should be stocked.
The pump should be mounted above the tank level or the airline fitted with non-return valve to prevent back-siphoning when the pump is stopped or fails. A loop in the air-line 8 cm(3 inch) vertically above the tank's water level will also prevent back-siphoning by absorbing the oscillations when the airflows stops. The air tubes from the pump are connected to air stones for providing minute air bubbles that diffuses the oxygen in water. Besides that it is also connected to various types of toys and also for airlift pumping under for under gravel filtration. For diffusion of more oxygen in water a micro pore air stone gets priority during selection of air stones..

For ferther details about FISHERY you can check my Hindi youtube channel. Link given below.....

Tuesday, November 27, 2018

PH is Important Thing of Water..

Every aquarium owner has heard of pH, but many do not understand the importance of controlling it. pH is the measure of acidity or alkalinity in the water. The pH scale is from 1 to 14. A pH of 7 is neutral, which basically means the water is not acidic or alkaline. As the scale goes down, for example 6, the water becames more acidic. 
As the pH goes up, for example 8, the water gets more alkaline. One very important part of the pH scale what most people do not understand is that it is a logarithmic scale. What that means is that the pH changes at a tenfold level between each number. For example, a pH of 5 is 10 times more acidic than a pH of 6, and a pH of 4 is 100 times more acidic than a ph of 6. So if your fish are supposed to be at a pH of 7, and the water level is 8, they are in water that is 10 times more alkaline than what they should be. If the pH is 9, then they are in water that is 100 times more alkaline than what they need. So it is easy to see why even a small change in required pH is stressful and potentially fatal to fish.
These examples really emphasize the importance in matching your fish closely to the expected pH level of your water and then closely monitoring the pH. Putting a fish that requires a pH of 8 with a fish that requires a pH of 6 is just not a good idea because one or both will be at a very unacceptable level of pH and will be under a great deal of stress.
There are several different ways to influence your water's pH. There are chemical additives that can be added directly to the water that will either raise or lower the pH. More natural agents can be used to alter water pH as well. Peat in the tank or filter will acidify the water. Mineral salts like calcium that are found in limestone or in some shells will cause an increase in alkalinity and pH. There is one important consideration in altering the pH of water and that relates to the mineral content(hardness) of the water. See the section below for a complete description.
Remember that fish are very sensitive to changes in pH, and rapid changes in pH can cause extreme stress and death. Fish should not be exposed to a change in pH greater than 0.3 in a 24-hour period.

Tap water is usually alkaline. Always test tap water pH prior to making freshwater aquarium water changes, and adjust as required. Marine aquaria should be maintained at a level of 8.0 to 8.4..