2. sea water quality measurement) before starting the experiment, and after 3 days, then fed the algae by measuring water quality as follows:-Water salinity (salinity) measured with a Refractometer.-Measure the acid – alkaline, with a pH meter brand double junction version of Oakton.-A measurement of the amount of oxygen in the water with dissolved oxygen meter YSI model 55 55 brands – 25 FT.A Mercury thermometer with a temperature--Quantity analysis method by ammonium Phenolhypochloritemethod
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