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  2. Perchlorate - Wikipedia

    en.wikipedia.org/wiki/Perchlorate

    Perchlorate concentration was the highest in Chilean nitrate, ranging from 3.3 to 3.98%. [51] Perchlorate in the solid fertilizer ranged from 0.7 to 2.0 mg g −1, variation of less than a factor of 3 and it is estimated that sodium nitrate fertilizers derived from Chilean caliche contain approximately 0.5–2 mg g −1 of perchlorate anion. [74]

  3. Aquarium filter - Wikipedia

    en.wikipedia.org/wiki/Aquarium_filter

    In the artificial environment of the aquarium, the nitrogen cycle effectively ends with the production of nitrates. In order that the nitrate level does not build up to a harmful level regular partial water changes are required to remove the nitrates and introduce new, uncontaminated water. [8]

  4. Berlin Method - Wikipedia

    en.wikipedia.org/wiki/Berlin_Method

    Lastly, live rock will also help balance and stabilize pH in the aquarium. Calcium, alkalinity and other trace elements which are consumed by corals are replaced through water changes (using natural seawater or a quality synthetic salt mix) or the use of a calcium reactor , kalkwasser (calcium water – calcium hydroxide mixed with pure water ...

  5. List of hyperaccumulators - Wikipedia

    en.wikipedia.org/wiki/List_of_hyperaccumulators

    Native to Europe and North Africa. Widely cultivated in the aquarium trade. [1]: 898 Cr: 1000: Dicoma niccolifera: 35 records of plants [1]: 891 Cr: roots naturally absorb pollutants, some organic compounds believed to be carcinogenic, [21] in concentrations 10,000 times that in the surrounding water. [22] Eichhornia crassipes: Water Hyacinth

  6. Marine aquarium - Wikipedia

    en.wikipedia.org/wiki/Marine_aquarium

    As refugiums become more common in marine aquaria, nitrate levels are easily manageable for even the novice hobbyist. 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.

  7. Manganese(II) perchlorate - Wikipedia

    en.wikipedia.org/wiki/Manganese(II)_perchlorate

    The anhydrous form is predicted to be isostructural with cobalt(II) perchlorate, based on the IR spectrum and the Raman spectrum of the compound. [3] The hexahydrate consists of discreet [Mn(H 2 O) 6] 2+ octahedrons and perchlorate anions with lattice constants a = 7.85 Å, b = 13.60 Å and c = 5.30 Å. The hexahydrate undergoes phase ...

  8. Nitronium perchlorate - Wikipedia

    en.wikipedia.org/wiki/Nitronium_perchlorate

    Nitronium perchlorate, NO 2 ClO 4, also known as nitryl perchlorate and nitroxyl perchlorate, is an inorganic chemical, the salt of the perchlorate anion and the nitronium cation. It forms colorless monoclinic crystals. It is hygroscopic, and is a strong oxidizing and nitrating agent. It may become hypergolic in contact with organic materials.

  9. Reef aquarium - Wikipedia

    en.wikipedia.org/wiki/Reef_aquarium

    In particular, ammonia, nitrite, nitrate, pH, salinity, alkalinity, calcium and phosphate levels should be monitored closely. When it comes to nano reefs, even minute changes in water conditions such as mild temperature fluctuations can be problematic, whereas the greater water volume of larger aquariums provides a more stable and flexible ...

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