An inductively coupled plasma (ICP) for spectrometry is sustained in a torch that consists of three concentric tubes, usually made of quartz, although the inner tube (injector) can be sapphire if hydrofluoric acid is being used.n inductively coupled plasma (ICP) for spectrometry is sustained in a torch that consists of three concentric tubes, usually made of quartz, although the inner tube (injector) can be sapphire if hydrofluoric acid is being used.
We recommend the following GPK (gallons per Koi) rates based on their size: Small Koi (2 - 8): 100 - 150 gallons. Medium Koi(8 - 14): 250 - 300 gallons. Large Koi(14 - 24): 400 - 500 gallons. Jumbo Koi(24 - 36): 750 - 900 gallons. The GPK estimates are based on long term housing for the Koi. Indoor winter tanks can be small, but must accommodate enough room for the Koi to swim around comfortably.
If you only make it two feet deep then its 500 gallons, but your fish will be subject to raccoons and blue herons which are our main predators around here. Keeping koi in less than 1000 gallons does not seem fair to the koi so we usually recommend that koi ponds be over 1000 gallons.f you only make it two feet deep then its 500 gallons, but your fish will be subject to raccoons and blue herons which are our main predators around here. Keeping koi in less than 1000 gallons does not seem fair to the koi so we usually recommend that koi ponds be over 1000 gallons.