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  2. Aquarium filter - Wikipedia

    en.wikipedia.org/wiki/Aquarium_filter

    Some systems incorporate bacteria capable of converting nitrates into nitrogen gas. [6] Accumulation of toxic ammonia from decomposing wastes is the largest cause of fish mortality in new, poorly maintained, or overloaded aquariums. [7] In the artificial environment of the aquarium, the nitrogen cycle effectively ends with the production of ...

  3. Marine aquarium - Wikipedia

    en.wikipedia.org/wiki/Marine_aquarium

    Nitrates should not exceed 2 ppm in reef tanks, or 20 ppm in fish-only tanks. It is sometimes acceptable to have a small amount of nitrate buildup, as some livestock, especially fish, are fairly tolerant of nitrate. Most corals, while able to assimilate nitrate, cannot be expected to survive, much less thrive, with high nitrate concentrations.

  4. Recirculating aquaculture system - Wikipedia

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

    Removing solids reduces bacteria growth, oxygen demand, and the proliferation of disease. The simplest method for removing solids is the creation of settling basin where the relative velocity of the water is slow and particles can settle at the bottom of the tank where they are either flushed out or vacuumed out manually using a siphon.

  5. Deep sand bed - Wikipedia

    en.wikipedia.org/wiki/Deep_sand_bed

    A deep sand bed is commonly defined as a bed of fine sand with a minimum depth of four to six inches which ensures that a portion of the sand at the bottom will not be exposed to significant circulation of water.

  6. Des Moines Water Works asks residents not to water lawns due ...

    www.aol.com/des-moines-water-works-asks...

    While high nitrate levels in drinking water can cause blue baby syndrome, a condition that can be fatal to infants 6 months and younger if not treated, some studies also have linked even moderate ...

  7. Ammonia poisoning - Wikipedia

    en.wikipedia.org/wiki/Ammonia_poisoning

    The source of ammonia in fish tanks is fish's excretion. [1] Fish excrete ammonia as a nitrogenous waste product. 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.

  8. Cam Ward sits out second half of Miami's loss in Pop-Tarts ...

    www.aol.com/cam-ward-sits-second-half-005109024.html

    Cam Ward playing the first half and then being done is actually more egregious to me than any of the guys who opt out and don’t go through any of the bowl process.

  9. Siphon - Wikipedia

    en.wikipedia.org/wiki/Siphon

    Another possible contamination point is the water intake in the toilet tank. An anti-siphon valve is also required here to prevent pressure drops in the water supply line from suctioning water out of the toilet tank (which may contain additives such as "toilet blue" [53]) and contaminating the water system.

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