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2. Freshwater aquarium - Wikipedia

   en.wikipedia.org/wiki/Freshwater_aquarium

   Other equipment includes a canopy or hood as an aquarium cover, an aquarium stand or base, lighting accessories, a heater, a thermometer, air pumps, filtration apparatus, airstones, fish food, a fish net, water conditioner, water quality testing kits, a siphon hose or gravel cleaner, and a bucket for water changes. When first starting an ...

3. Lysmata amboinensis - Wikipedia

   en.wikipedia.org/wiki/Lysmata_amboinensis

   L. amboinesis exhibiting cleaning behaviour in the Sea Life Centre of Oberhausen, Germany. Many species of Lysmata, including L. amboinesis, are commonly kept in salt water aquaria; they are safe and beneficial since they will clean both the tank and fish but not harm corals. For these reasons they are often kept in both home and public aquaria ...

4. Aquarium filter - Wikipedia

   en.wikipedia.org/wiki/Aquarium_filter

   The water trickles through the trays, keeping the filter wool wet but not completely submerged, allowing aerobic bacteria to grow and aiding biological filtration. The water returns to the aquarium like rain. [14] Alternatively, the wet/dry filter may be placed below the tank. In this design, water is fed by gravity to the filter below the ...

5. Water purification - Wikipedia

   en.wikipedia.org/wiki/Water_purification

   Fresh water can have widely ranging pH values depending on the geology of the drainage basin or aquifer and the influence of contaminant inputs . If the water is acidic (lower than 7), lime, soda ash, or sodium hydroxide can be added to raise the pH during water purification processes. Lime addition increases the calcium ion concentration, thus ...

6. Aquarium - Wikipedia

   en.wikipedia.org/wiki/Aquarium

   Tank designs and techniques for maintaining water quality were developed by Warington, later cooperating with Gosse until his critical review of the tank water composition. Edward Edwards developed these glass-fronted aquaria in his 1858 patent for a "dark-water-chamber slope-back tank", with water slowly circulating to a reservoir beneath. [21]

7. The US cities with the best quality of life, ranked - AOL

   www.aol.com/us-cities-best-quality-life...

   Quality of life score: 7.0 Population: 1,388,320 Median household income: $109,765 Median home price: $807,264 Median age: 38 years old Known for: San Diego residents enjoy outdoor activities such ...