MasterLine Crystal Clear

MasterLine Crystal Clear

  • Clarifies freshwater aquarium water
  • Increases oxygen concentration
  • Binds organic particles
  • Safe for aquarium inhabitants
  • Measuring beaker included
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MasterLine Crystal Clear is a product designed for water clarification in freshwater aquariums. It binds fine organic particles, which then gives the water a whitish haze, allowing for their mechanical filtration. Initially, the water becomes cloudier after application but clears significantly within 6 - 12 hours of filtration.

It can contribute to a natural increase of the oxygen concentration in the aquarium as it can enhance the pearling effect of plants, creating a healthier and more aesthetically pleasing environment for all aquarium inhabitants. MasterLine Crystal Clear is safe for all forms of aquatic life, including shrimp, as long as the instructions are followed.
A graduated measuring cup from 2,5 to 20 ml is included for precise dosing. The recommended dosage is 1 ml per 10 liters of water when the water becomes cloudy (typically 2 - 3 days after a water change). It should be dosed slowly over 20 - 30 seconds during the lighting period, preferably in areas with high water flow and away from fish and plants.

It is important that the KH of the water is at least 2 degrees, and dosing should not occur more than twice a week. After each application, wait for a maximum clarification within 24 hours. To prevent suspended particles, it is recommended to clean the filter more frequently and vacuum the substrate.


  • MasterLine Crystal Clear binds fine organic particles in the water
  • Safe for all forms of aquatic life, including shrimp
  • Measuring cup from 2,5 to 20 ml included
  • Should only be dosed during the lighting period


1 ml per 10 liters when the water becomes cloudy (usually 2 - 3 days after a water change)



MasterLine was founded in 2016 out of passion for aquaristics, which has since become the brand's slogan. Masterline fertilisers contain a balanced mix of nutrients that are essential for the healthy growth of aquatic plants. The Masterline fertiliser system is designed to be particularly effortless to use and takes the user by the hand with a very simple concept. The specially calculated compositions provide the aquatic plants with all the necessary macro and micro nutrients and ensure good growth and vibrant colours.

General information

Item no.
EAN 9355478926552
Weight 0,54 kg
Shipping weight 0,57 kg

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