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কিভাবে এমোনিয়া নিয়ন্ত্রণ করবেন বায়োফ্লকে | How to Control Ammonia in Biofloc Fish Tank

I think the main problem you might run into is the water going anaerobic. That because the process of locking up ammonia nitrogen by increasing the available carbon requires microbes. The process converts carbon to CO2. The oxygen for that CO2 comes from the water.

So if you get over that problem I suggest looking at the chart below if you have not seen it before. Its the unionized ammonia (NH3) that kills fish. Not ammonium NH4. The ammoniacal nitrogen in the water is always in the forms NH3 + NH4. The percent thats going to be the toxic NH3 is listed in the chart below. For example at pH 8.2 with a temperature of 75.2 F the percent of the total NH3 is 7.72%. So if your lab test says you have 100 ppm ammonia (NH3+NH4) then 7.72 ppm will be NH3. Fish can have toxicity around 0.05ppm NH3. Notice lowering the pH helps as well as lowering the water temperature.

So you have a choice of diluting the water with new water, cool down the water or lower the pH. Or pump the water through a filtering system that will capture the ammonia or use microbes to convert it to nitrates (needing good aeration).