Sili-Out 2
Freshwater / Silicate remover

All advantages

  • Removes safely, fast and permanently:
    • Silicate
    • Phosphate
    • Barium
    • Arsenic
    • Chrome
    • Dyeing substances
  • Aluminum based formulation with a purity above 99%
  • Enhances the natural growth of plants and corals
  • Prevents the growth of diatomes


Sili-Out 2 removes silicate, phosphate, barium, arsenic, chromium, as well as dyes and turbidities from water quickly, reliably and permanently, and improves the water quality for the long term.

Sili-Out 2 specifically reduces the above-mentioned pollutants in a way that is harmless for your animals and without affecting the pH value.

Sili-Out 2 improves the natural growth of corals and plants in polluted areas within a very short time. The growth of undesirable diatoms is sustainably prevented.

Sili-Out 2 is an aluminium-based product with a purity level above 99 %

•  Always start with the recommended quantity of Sili-Out 2 and increase it by up to 100 ml for 100 litres of water, if necessary.
•  Rinse Sili-Out 2 thoroughly under water prior to use to remove abra-sion dust.
•  The ideal phosphate value in saltwater aquariums should be between 0.02 - 0.05 mg and the silicate value should be ‘non-detectable’.
•  We recommend using Sili-Out 2 in a fluidized bed filter or filter sleeve in an area with good water flow, such as exterior or internal filters.
•  Use our Substrate Cleaner regularly to remove phosphate deposits. During this application, Sili-Out 2 has to be removed from the aquari-um cycle until the water is clear again.
•  Use Sili-Out 2 (aluminium-based) every other month, alternating with Phos-Out 4 (iron hydroxide-based), to avoid unwanted enrichment of aluminium or iron.

Available size:
•  360 g
•  720 g


Use 50 ml per 100 litres of water.

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Saltwater aquarium

Freshwater aquarium


Personal advice