Hello Everyone!
Check out this video, on how to use the SERA test kits to check the amount of phosphate in the water!
PS: We conduct monthly courses for those interested in mud crab farming, should you wish to learn more about the business, do drop us a PM!

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Please share each of your water quality indicators and standard such as salinity, pH, alkalinity, calcium, magnesium, ammonium, nitrate, nitrite and etc.