Use of Chemical Materials for Pond Water Treatment 02 – Stages of Implementation

Treatment implementation using chemicals is rerated to pond waters circulation, especially in the setting of pond water height activities such as on fertilization activities which is have been described previously, there is a of pond water volume is very influential on the effectiveness of treatments to be performed.

This condition can be interpreted that at use of the same dose, the levels of its influence and effectiveness will be different if provided in the ponds with different water volumes. The stages that can be performed in of this treatment application are as follows:

1. Identify to problems encountered in pond water and level of its effect on shrimp culture activities.
   
   
2. If the found problems are considered serious enough it is necessary to decrease the height of pond waters approximately 50%
   
   
3. At the height of pond waters relatively low carried by simultaneous water circulation in accordance with it requirements.
   
   
4. Provision of chemicals into the pond waters with a dose according to the level of problems experienced.
   
   
5. Pond water circulation was stopped and operation of water wheel which has been intensified so that given treatment can provide optimum results.
   
   
6. If the water quality and condition of the shrimps showed a change to a better side, then the pond waters circulation carried back toward addition of pond waters and water quality improvement which is more stable.
   
   
7. If the pond waters quality and shrimps condition are not continued to improve and likely to get worse then a decision should lead to harvesting by taking into production costs which have been issued and the estimated yields based on price, size and quality of shrimps.

Use of chemicals in the pond waters quality management is not recommended for shrimps under normal conditions that are ready to harvest. This treatment is feared that its can be absorbed by the shrimp body through metabolic processes or adsorbed at the time of shrimp molting and its can affect for produced shrimp quality. In the last few years have been conducted testing to shrimp quality through strict regulation by some of export destination countries, particularly for shrimp that contain heavy metals and substances of considered dangerous.



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