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.
Breeding Koi. If you are interested in breeding koi, you need to have the koi larger than 25cm or else it is biologically impossible because the ovaries and testes in the male and female have not fully developed making them sexually imature. Anywhere after 25cm in length you can start to breed the koi fish.reeding Koi. If you are interested in breeding koi, you need to have the koi larger than 25cm or else it is biologically impossible because the ovaries and testes in the male and female have not fully developed making them sexually imature. Anywhere after 25cm in length you can start to breed the koi fish.