Is high alkaline water affects growth of shrimp?

Hello everyone:
    It's been a long gap. Hope everyone will find this. Hereafter we will go with frequent posts. I am happy today and wanna share few things regards high alkaline water. 

Issues in Inland region:
      In India, most of the farming areas are found between low to medium saline water. In inland low saline areas, farmers are facing high alkalinity in their bore water(source water). Due to contamination and pollution we can't able to use the water from creek alone. To compensate this, we need to use bore water (to reduce operational costs also). 

Alkalinity and shrimp:
      Alkalinity is an complicated thing which available in different forms in aquatic system. 
      Hopefully, several results shows that, higher alkalinity didn't affect the growth and survival of shrimp. 
     In biofloc system, alkalinity plays a major role. For the formation of floc and decomposition of total ammonia nitrogen, microbes uses dissolved oxygen, inorganic carbon sources. Due to faster decomposition the alkalinity of the system will reduce. 
    Some studies shows heterotropic bacteria uses 5-7 ppm of alkalinity to reduce 1 ppm of TAN. But due to slower growth of autotrophic bacteria, Nitrite in the system will be high. 

Constant water quality:
    In any system, there will be a lot of optimum ranges, but according to alkalinity we can't able to tell the exact range, if you are maintaining the constant parameter then it won't affect shrimp. 

Alkalinity and primary productivity:
     Alkalinity plays important role in primary production of ecosystem. High alkaline water shows high primary production compare to low alkaline waterwater due to excess bicarbonate. 

Alkalinity and heavy metals toxicity:
     High alkaline water prevents metal toxicity in aquatic system. The solubilities of these metals decreases when pH increases. 

Results:
     Results from various studies mentions, the higher survival of shrimp and good growth rate in high alkaline water more than 300 ppm. 
     When the water have high alkalinity, then there will be a chance for low calcium and magnesium ions. 
    High alkaline water also favors for higher biofloc formation, because microbes takes inorganic carbon for their growth. Here I wanna tell, high alkaline water is not an major issue when all other parameters analysed in detail. It may varies on certain parameters. 

Thanks for reading🙃... 

Contact for any query.... 


P. Dhivagar, 
+91 9384346193

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