API Algaefix Marine

  • Controls many types of algae in marine and reef aquariums. 
  • Will not harm marine fish, corals or other invertebrates. 
  • Treats 2400 US gallons of salt water. 
  • Active ingredient: Poly(oxyethylene(dimethylimino) ethylene dichloride) 4.5% 
  • Made in the USA. 
  • Algaefix marine effectively controls these types of saltwater algae: Green algae (Cladophora), "Red Slime" (Oscillatoria / Sprirulina major), "Brown Algae" (Cyclotella) in marine aquariums containing live corals, invertebrates and fish. 
  • When used in salt water will not harm snails, clams, scallops, shrimp, anemones, sea cucumbers, feather dusters, coralline algae, soft corals, hard corals and other invertebrates.
  • Does not discolour the water or cause foaming.


  • Add 1 ml (1/5 tsp) for each 10 gallons or 5 ml (1 tsp) for each 50 gallons or 50 ml (10 tsp) for each 500 gallons of aquarium water. 
  • Repeat dose every 3 days until algae is controlled. 
  • Siphon or scrape any dead algae from aquarium. 
  • Once algal growth is under control, add one dose per week. 
  • Weekly doses of AlgaeFix Marine will control algal growth and reduce aquarium maintenance.


Related Items