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2. sera (company) - Wikipedia

   en.wikipedia.org/wiki/Sera_(company)

   In 1972, Sera Vipan flakes became the flagship product of the company, marking a shift in focus towards the broader aquarium hobby. Throughout the 1970s, Sera expanded its product range to include water conditioners such as Sera Aqutan and Sera Morena , aquatic plant fertilizers like Sera Florena , and aquarium fish medications including Sera ...

3. File:Aquarium-NitrogenCycle.svg - Wikipedia

   en.wikipedia.org/wiki/File:Aquarium-Nitrogen...

   English: Nitrogen Cycle in aquariums. Legend: (1) Addition of food and nutrients, (2) Production of Urea and Ammonia by Fish, (3) Ammonia is converted to Nitrites by beneficial Nitrosomonas bacteria, (4) Nitrites are converted to Nitrates by beneficial Nitrospira bacteria. Less toxic Nitrates are removed by plants and periodic water changes.

4. Marine aquarium - Wikipedia

   en.wikipedia.org/wiki/Marine_aquarium

   Ammonia and nitrite should be tested regularly; any detectable levels (i.e., over 0 ppm) can be indicative of a problem. 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.

5. Redfield ratio - Wikipedia

   en.wikipedia.org/wiki/Redfield_ratio

   For his 1934 paper, Alfred Redfield analyzed nitrate and phosphate data for the Atlantic, Indian, Pacific oceans and Barents Sea. [1] As a Harvard physiologist, Redfield participated in several voyages on board the research vessel Atlantis, analyzing data for C, N, and P content in marine plankton, and referenced data collected by other researchers as early as 1898.

6. Ammonia poisoning - Wikipedia

   en.wikipedia.org/wiki/Ammonia_poisoning

   Schematic representation of the flow of Nitrogen through a common aquarium. Ammonia poisoning is a common fish disease in new aquariums , especially when immediately stocked to full capacity. Ideally, the level of ammonia (NH 3 ) and ammonium compounds (i.e. those containing NH 4 + ) in fish tanks should be zero.

7. FDA Issues Urgent Warning on Dangers of Common Dog Medication

   www.aol.com/lifestyle/fda-issues-urgent-warning...

   The United States Food and Drugs Administration is warning pet owners about a common medication given to pets to treat arthritis. The F.D.A. now says that the drug Librela may be associated with ...

8. Aquaponics - Wikipedia

   en.wikipedia.org/wiki/Aquaponics

   The nutrient-rich overflow water can be collected in catchment tanks and reused to boost the growth of soil-planted crops or pumped back into the aquaponic system to maintain water levels. [44] In traditional aquaculture, regular water exchange is essential, unlike in aquaponics. Producing 1 kg of beef typically demands 5,000 to 20,000 liters ...

9. Louisiana often holds inmates past their release date, DOJ ...

   www.aol.com/louisiana-often-holds-inmates-past...

   Louisiana’s prison system routinely holds people weeks and months after they have completed their sentences, the U.S. Department of Justice alleged in a lawsuit filed Friday. The suit against ...