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   Photo: January 2000   

This is a photo of my 100 liter raising tank. Due to heavy feeding (4-5 times daily), heavy filtration (over 900 liters/hour) has to be followed by very frequent massive water changes which are a must. Thus a 90% water change is performed every weekend. Salts and water conditioner are added while new water is added.

Photo: January 2000

The whole procedure takes less than 10 minutes. Water is removed with a hose (see photo above) and is added with a normal garden hose directly from the tap. During the second phase, hot water is also added (containing the salts and the conditioner) to keep temperature drop to a minimum.

Photo: January 2000

The end of the hose which is used to remove the old water is covered with a nylon mesh (see photo above). The size of the mesh allows uneaten food and other debris to pass but it doesn't allow fry to be sucked. Since the water is released in the garden this precaution is necessary. [ Back ] [ Up ] [ Next ]