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2. Rummy-nose tetra - Wikipedia

   en.wikipedia.org/wiki/Rummy-nose_tetra

   The rummy-nose tetra (Petitella rhodostoma) is a species of tropical freshwater characin fish originating in South America, popular among fishkeepers as a tropical aquarium fish. [2] One of many small tetras belonging to the same genus, it is on average 5 cm (2 in) long when fully grown. [ 3 ]

3. Deep water source cooling - Wikipedia

   en.wikipedia.org/wiki/Deep_water_source_cooling

   Deep water source cooling (DWSC) or deep water air cooling is a form of air cooling for process and comfort space cooling which uses a large body of naturally cold water as a heat sink. It uses water at 4 to 10 degrees Celsius drawn from deep areas within lakes, oceans, aquifers or rivers, which is pumped through the one side of a heat exchanger .

4. Ctenobrycon spilurus - Wikipedia

   en.wikipedia.org/wiki/Ctenobrycon_spilurus

   But an aquarium with plastic plants with driftwood will do too. As long as the fish have a place to hide. It is necessary to keep them in a school of 6–8 other silver tetras in a 30-gallon tank. That is 100 cm (39 in) long tank. With a pH range of 6.0–7.5. The temperature of the water should be 24–28 °C (75–82 °F).

5. Hyphessobrycon columbianus - Wikipedia

   en.wikipedia.org/wiki/Hyphessobrycon_columbianus

   The Colombian tetra is generally a hardy, adaptable fish and has a lifespan of 3 to 5 years. It eats all common aquarium foods such as flake food, frozen and freeze-dried foods and small live foods. They prefer neutral or slightly acidic water at around 24–26 °C (75–79 °F). The recommended tank volume is about 30 US gallons (114 L).

6. Airlift pump - Wikipedia

   en.wikipedia.org/wiki/Airlift_pump

   A geyser pump, an improved airlift pump, powered by compressed air, raises fluid by forcing rising bubbles to displace fluid. 50. air supply 52. air inlet port 58. liquid supply 60,62. air supply lines 64. upper end of air tank 86 66,82. air ports 70. upper air inlet of u-shaped elbow 74 76 air outlet 84. fluid intake 65. riser tube 88 ...

7. Water aeration - Wikipedia

   en.wikipedia.org/wiki/Water_aeration

   The impeller pumps water from the first few feet of the water and expels it into the air. [4] This process utilizes air-water contact to transfer oxygen. As the water is propelled into the air, it breaks into small droplets. Collectively, these small droplets have a large surface area through which oxygen can be transferred. Upon return, these ...