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11 August, 2008

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.

  2. The pond waters color is brownish. It meant there is diatomae dominance. This plankton is one of supplier of natural feed for the shrimps, so the rate of shrimps growth relatively quickly. The stability level of this plankton are relatively less, especially in season with a high level of rainfall, so it is potential to plankton collapse occurrence and if it is not managed carefully, stabilization of water quality will be volatile, and it would interfere to shrimps comfort level in the pond.

  3. The pond waters color is brownish green. It meant showing the dominance that occurs is a blend of chlorophyceae and diatomae nature which is more stable and supported by the availability of natural feed for the shrimps.
Standard of pond waters colors as described above is a practical reference for identifying species of plankton in an attempt to detect water quality problems at an early stage. In addition to these standard colors, there is several pond water colors usually found in shrimp farming activities, are among others:
  1. The pond waters color is yellowish. It meant there is cyanophyceae dominance of phytoplankton species. On the ponds waters condition like this, the shrimp are usually paler in color than usually accompanied with a decrease in shrimp appetite and if its not be anticipated immediately can cause damage to hepatopancreas of shrimp.

  2. The pond waters color is faded green, it meant there is dynophyceae (phytoplankton species) dominance which it’s impacts relatively similar to the point (1).

  3. The pond waters color is greenish-blue. It meant there is blue-green algae dominance which it’s impacts relatively similar to the point (1)

  4. Camouflage green color. In these conditions the pond as greenish but basically no / less contain plankton. This happens usually in ponds, which is contain plankton seeds very less but fertilizing activities conduct continuously, so that occurred color is the color caused by weathering. This incident can be identified by measuring a transparency of pond waters is usually very high, or to see the color of existing water on the water wheels which is being operated.
Identification of plankton types in the pond waters in a practical way is by looking at the waters color as described above to be supported by observation and laboratory analysis on a regular basis to obtain more accurate results. This activity is done by taking water samples and shrimp samples from the ponds both problematic and non-exposed to the problem, so that comparisons can be drawn.

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  1. Pond Water Color – 02 – Analysis Aspects
  2. Pond Water Color – 01 – Logical Basic
  3. Physical Condition of Pond Water
  4. Pond Bottom Condition - 03 – Base of Consideration
  5. Pond Bottom Condition - 02 – The Monitoring Methods
  6. Pond Bottom Condition - 01 - Background
  7. Chemical Usage for Pond Water Treatment – 02 – The Application Stages
  8. Chemical Usage for Pond Water Treatment – 01 – The Logical Basic
  9. The Methods of Pond Water Quality Management – The Background
  10. Pond Water Circulation - 03 - The Methods
  11. Pond Water Circulation- 02 – The Sources and Influenced Factors
  12. Pond Water Circulation - 01 – The Logical Basic
  13. Pond Water Fertilization – 02 – The Kind and Method
  14. Pond Water Fertilization – 01 - Background
  15. Pond Water Inoculation – 2 - The Method
  16. Pond Water Inoculation – 1 - Background
  17. Shrimp Predators and Competitors Within Pond Water
  18. Identification of Pond Water Quality Problems - 02
  19. Identification of Pond Water Quality Problems - 01
  20. The Methods of Pond Water Quality Management - Concept
  21. Pond Water Transparency -1
  22. Pond Water Quality Management - Concept 02
  23. Pond Water Quality Management - 01
  24. Phosphorescency Pond Waters
  25. “Dust” Within Pond Waters
  26. Beware of The Rainy Season
  27. Foamy Pond Waters
  28. The Importance of Water Reservoir
  29. Why Does The Shrimps Convoy ?

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