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  2. Heat trap - Wikipedia

    en.wikipedia.org/wiki/Heat_trap

    Heat traps are valves or loops of pipe on the cold water inlet and hot water outlet of water heaters. The heat traps allow cold water to flow into the water heater tank, but prevent unwanted natural convection and heated water to flow out of the tank. [1] [2] Newer water heaters have built-in heat traps.

  3. Here's How Often You Should Drain Your Water Heater ... - AOL

    www.aol.com/heres-often-drain-water-heater...

    Step 3: Attach a water hose to the drain valve at the bottom of your water heater and run the hose outside or into a nearby drain. You can use any generic hose for this step, and a garden hose ...

  4. Aquarium heater - Wikipedia

    en.wikipedia.org/wiki/Aquarium_heater

    An aquarium heater is a device used in the fishkeeping hobby to warm the temperature of water in aquariums. [1] Most tropical freshwater and marine aquariums are maintained at temperatures that range from 22 to 30 °C (72 to 86 °F). [1] [2] [3] The types include glass immersion heaters and undergravel heating. There are also heating mats that ...

  5. Freshwater aquarium - Wikipedia

    en.wikipedia.org/wiki/Freshwater_aquarium

    For a tropical fish tank, maintaining a warm environmental temperature ranging between 75 and 86 °F (24 to 30 °C) enables different tropical fish to thrive at different temperatures. [2] Aquarium substrate usually consists of sand or gravel. Aquarium substrate is important for the fish's health and replicating their natural environment.

  6. Undertank heater - Wikipedia

    en.wikipedia.org/wiki/Undertank_heater

    The hot zone is just above the heater; the opposite zone, the cold zone, is where the live food and the water bowl would be placed. A substrate between the pad and the tank is necessary, as is a thermostat or rheostat to prevent it from overheating and burning the animals. Malfunction in an under tank heater could result in higher temperatures ...

  7. Tankless water heating - Wikipedia

    en.wikipedia.org/wiki/Tankless_water_heating

    A hybrid water heater is a water heating system that integrates technology traits from both the tank-type water heaters and the tankless water heaters. [5] It maintains water pressure and consistent supply of hot water across multiple hot water applications, and like its tankless cousins, it is efficient and can supply a continuous flow of hot ...

  8. Raceway (aquaculture) - Wikipedia

    en.wikipedia.org/wiki/Raceway_(aquaculture)

    In a well designed system, the existing water in the raceway is largely replaced by new water when the same volume of new water enters the raceway. Self-cleaning can sometimes be achieved if the fish stocks density is sufficiently high and the water level is sufficiently low. For example, if trout are stocked at 20 kilograms per cubic metre ...

  9. Recirculating aquaculture system - Wikipedia

    en.wikipedia.org/wiki/Recirculating_aquaculture...

    Recirculating aquaculture systems (RAS) are used in home aquaria and for fish production where water exchange is limited and the use of biofiltration is required to reduce ammonia toxicity. [1] Other types of filtration and environmental control are often also necessary to maintain clean water and provide a suitable habitat for fish. [ 2 ]