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KM800T Kalkwasser Stirrer

Kalkwasser - Translates from the German for limewater and is a solution made by dissolving Calcium Hydroxide in water. The resultant fresh solution is alkaline with a pH of 12.4 and contains a ready supply of both Calcium ions and Carbonate ions.

The solution reacts readily with CO2 in the atmosphere to form calcium carbonate and so it must be made in a relatively air tight environment which is where the kalkwasser stirrer comes in to play.

The KM800 is a stirrer suitable for larger tanks and commercial systems holding up to 2kg of calcium hydroxide and producing 30lt - 6.7 UK gallons - 7.5 USG per hour of kalkwasser.


Technical Data:

  • KM800T Stirrer: Article No. 87003000
  • Can be stood on the outside of the aquarium or sump.
  • 300mm - 12" body diameter.
  • Must gravity feed back into the water supply.
  • Feed with RO water from a reservoir or direct from the RO unit.
  • Use in conjunction with a top up system.
  • Makes up to 30 lts 7.5 USG of kalkwasser per hour.


  • 400mm x 400mm x 800mm (LxWxH)
  • L 15.8" W 15.8" H 31.5".
  • 7.5V 3 watts consumption.


  • Suitable for commercial aquariums
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