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  2. Ammonia poisoning - Wikipedia

    en.wikipedia.org/wiki/Ammonia_poisoning

    A build-up of ammonia in the fish tank leads to ammonia poisoning. Species of ammonia-oxidizing bacteria (AOB) can break down the ammonia and convert it to other, less toxic, nitrogen products. Two examples of AOB are Nitrosospira and Nitrosomonas. [2] The amount of ammonia present is usually accompanied by a rise in pH. As ammonia is a base ...

  3. Recirculating aquaculture system - Wikipedia

    en.wikipedia.org/wiki/Recirculating_aquaculture...

    Reoxygenating the system water is a crucial part to obtaining high production densities. Fish require oxygen to metabolize food and grow, as do bacteria communities in the biofilter. Dissolved oxygen levels can be increased through two methods, aeration and oxygenation. In aeration air is pumped through an air stone or similar device that ...

  4. Ammonia pollution - Wikipedia

    en.wikipedia.org/wiki/Ammonia_pollution

    Ammonia is toxic to aquatic life which leads to increased amounts of fish deaths. [6] Ammonia pollution also leads to eutrophication. Eutrophication is the growth of algae that kills other aquatic life and creates dead zones. Ammonia pollution affects freshwater and salt water ecosystems differently due to physical and chemical differences.

  5. Wastewater quality indicators - Wikipedia

    en.wikipedia.org/wiki/Wastewater_quality_indicators

    High concentration of phosphate in water bodies is an indication of pollution and largely responsible for eutrophication. [5] Phosphates are not toxic to people or animals unless they are present in very high levels. Digestive problems could occur from extremely high levels of phosphate.

  6. The Best Fast-Food Family Meal Deals to Feed a Crowd for Less

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    3. Domino's: $7 Mix and Match Deal. The best long-running meal deal at Domino's is the $7 Mix and Match. You need to order at least two items, but you can get as many as you want from choices such ...

  7. Ammonia - Wikipedia

    en.wikipedia.org/wiki/Ammonia

    Liquid ammonia has a very high standard enthalpy change of vapourization (23.5 kJ/mol; [28] for comparison, water's is 40.65 kJ/mol, methane 8.19 kJ/mol and phosphine 14.6 kJ/mol) and can be transported in pressurized or refrigerated vessels; however, at standard temperature and pressure liquid anhydrous ammonia will vaporize.

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    The material is lightweight and stretchy, which means it'll be a high-fashion set that will take you right through spring. "The best two-piece comfy and easy sweatsuit! Can dress up or down!

  9. Jessica Capshaw and Camilla Luddington on worst 'Grey's ... - AOL

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    So I think if you put all those together and you think about what we've set out to do, what we've set out to do is check all those boxes while we have a good time." "I hope you laugh with us ...

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