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.
1 If you plan on keeping larger fish like koi, you will need more water. 2  Koi ponds typically need at least 1000 gallons of water. 3  Chlorine is unhealthy for fish, so try not to fill up your pond with chlorinated water. If you plan on keeping larger fish like koi, you will need more water. 2  Koi ponds typically need at least 1000 gallons of water. 3  Chlorine is unhealthy for fish, so try not to fill up your pond with chlorinated water.