Pond Waters Transparency 04 – Management Methods

The used methods in the management of pond waters transparency are water circulation and fertilizer by considering plankton seed and sunlight factors. Used water circulation in the process of pond waters dilution with water transparency level that is too low / concentrated namely the continuous pond waters replacement without fertilization to obtain a desired transparency level.

Pond Waters Transparency 03 - Indicators On Shrimps

A decision making in determining the pond waters transparency level to be applied must be based on behavior changes of shrimps through visual monitoring and observations carefully so as not to cause problems.

Pond Waters Transparency 02 – Transparency Level

The factors underlying a rationale in determining the level of water transparency is water conditions in terms of biology, chemistry and physics for the of shrimp life, there are shown below:

A. Pond Waters Transparency is Too High

Pond Waters Transparency 01 – Background

Water transparency is a level of sunlight penetration in pond waters that are expressed with units of length. The used instrument to measure the water clarity is seichi dish, there is a dish given black and white colors and connected with a rod / rope handles that have a scale lines.

Pond Waters Colors 03 - Criteria of Water Color

Criteria of pond waters colors that can be used as a standard reference in water quality management are as below:

1. The pond waters color is dark green. It meant there are chlorophyceae dominance with more stable characteristic to changes of environmental and the weather because it has a relatively long time of mortality. The growth rate which relatively fast was potential for an occurrence of plankton booming in the waters.

Pond Waters Colors 02 – Analysis Aspects

The aspects that need to be considered in assessing and analyzing the of pond waters colors in general includes:

1. Type of dominant plankton
   
2. Abundance of dominant plankton
   
3. Condition and quality of shrimps.

Pond Waters Colors 01 – Rationale

Basically, pond water color is due to a dominance of certain plankton types that grows and develops in the pond waters. This parameter can be used as one measure of pond waters quality in a practical way through visual observation by considering the conditions and quality of shrimps in these waters with the following rationales:

Physical Conditions of Pond Waters

Mainly, the physical condition of pond water is a pond waters condition viewed from the existence and appearance of the physical particles that were found in the waters. The particles appear as a result of processes which are occur within the pond waters ecosystem as well as cultivation technical factors thus its indirectly influence the living organisms within it.

Pond Bottom Conditions 03 – Basic of Considerations

In an effort to anticipate the problems which are occur at pond bottom, it is necessary to monitor the pond bottom both incidental as described before and periodically which are by dirt and black mud removal, especially in the central of water outlet with water pumps tools and a hose spiral by sucking the dirt and black mud and it throw through the water outlets.

Pond Bottom Condition 02 – Observation Methods

Dirt at pond bottom is usually formed black sludge that settles at the bottom and contains H2S and NH3 which are acidic and in certain doses can be harmful to the shrimps. Dirt is derived from metabolic processes performed by the aquatic organisms, plankton mortality and shrimp feed waste which is not consumed and influence of other cultivation treatments.

Pond Bottom Condition 01 – Background

Pond bottom condition is a physical condition of pond bottom and its both processes that occur therein relating to biology, chemistry, physics and ecology that directly or indirectly involved an effect on the lives of shrimp and other organisms in a pond water ecosystem linkages.