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2. Algaculture - Wikipedia

   en.wikipedia.org/wiki/Algaculture

   An open system of algae cultivation involves the growth of algae in shallow water streams which could originate from a natural system or artificially prepared. In this system, algae can be cultivated in natural water bodies like lakes, rivers, and in oceans, as well as artificial ponds made up of concrete, plastic, pond liners or variety of ...

3. Harmful algal bloom - Wikipedia

   en.wikipedia.org/wiki/Harmful_algal_bloom

   Cyanobacteria (blue-green algae) bloom on Lake Erie (United States) in 2009. These kinds of algae can cause harmful algal bloom. A harmful algal bloom (HAB), or excessive algae growth, is an algal bloom that causes negative impacts to other organisms by production of natural algae-produced toxins, water deoxygenation, mechanical damage to other organisms, or by other means.

4. Sodium hypochlorite - Wikipedia

   en.wikipedia.org/wiki/Sodium_hypochlorite

   A 12% solution is widely used in waterworks for the chlorination of water, and a 15% solution is more commonly [39] used for disinfection of wastewater in treatment plants. Sodium hypochlorite can also be used for point-of-use disinfection of drinking water, [40] taking 0.2–2 mg of sodium hypochlorite per liter of water. [41]

5. Microplastics - Wikipedia

   en.wikipedia.org/wiki/Microplastics

   Haiti has no collective system for waste collection and treatment, [274] and thus plastic is often disposed of in urban water evacuation canals, which then degrade to form microplastics. Due to tropical temperatures and average daily duration of 12 hours, [ clarify ] the plastics present in urban waterways could degrade more rapidly.

6. Mercury in fish - Wikipedia

   en.wikipedia.org/wiki/Mercury_in_fish

   A 2014 USGS survey of mercury levels in the United States water system found that methylmercury concentrations in fish were typically highest in wetland areas including the coastal plain streams in the Southeast. Fish methylmercury levels were also high in the Western US, but only in streams that had been mined for mercury or gold.

7. Aquascaping - Wikipedia

   en.wikipedia.org/wiki/Aquascaping

   Algae is most commonly caused by an excess of nutrients and waste, so aquarists will perform water changes to lower the nitrates present. [46] Another method is the use of animals that consume algae , such as some fish (notably cyprinids of the genera Crossocheilus and Gyrinocheilus , and catfish of the genera Ancistrus , Hypostomus , and ...