Seaweed used feathers in reducing nitrite and of Nicaea's great. From the water in the white shrimp (litopenaeus vannamei) By wearing a feather algae that weight 0 gram, 40. G., 80 grams and 120 grams per 20 litres of water to test for a period of 15 days, 2 days of quality measurement. I found that seaweed Feather weight 120 grams can reduce nitrite and of Nicaea's great, which is equal to 0.06 ± 0.04 mg/l and 0.05 ± 0.3 mg per liter, respectively, and the effectiveness of therapy, which is equal to 50% and 20%, respectively, which did not differ significantly by statistics. (P>0.5.), and the growth of algae was found to be a Feather weight 40 g growth rate as well as the statistical significance level (P < 0.05), which is equal to the percentage accounted for 8.16 ± 60.00 is equal to 50%.
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