API AlgaeFix Freshwater Aquarium Algaecide 16-oz

API Algaefix Algae Control is excellent when it comes to providing the most effective water treatment for aquariums. It’s one of the top API aquarium products to keep your freshwater tank clear and healthy. API Algaefix treats troublesome algae like green water (algal blooms) and string or hair algae, without harm to fish or plants. It's safe to use weekly, easy to dose, and can simplify aquarium life (by reducing aquarium chores) by preventing algae outbreaks, which will be worth it to busy fishkeepers.

Ingredients 

• Polyoxyethylene(dimethyliminio)ethylene(dimethyliminio)ethylenedichlorideoxyethylene(dimethyliminio)ethylene(dimethyliminio)ethylene dichlorideoxyethylene(dimethyliminio)ethylene(dimethyliminio)ethylenedichloride (also known as polixetonium chloride, formerly Busan 77), at 4.5% w/v
  

Other Ingredients:

• Remaining proportion (~95.5%) consists of water and proprietary inert components. (Names not disclosed on label/MSDS)

• Do not use it in tanks containing freshwater crustaceans (e.g. shrimp, crabs, lobsters). 
• Toxic if swallowed or absorbed through skin; can irritate eyes.
• Avoid contact with skin, eyes, and clothing; wash thoroughly with soap and water after handling and before eating or drinking.
• Protective gear: Use chemical-resistant gloves, safety glasses or goggles, and avoid wearing contact lenses during use. 
• Flammable ingredients—keep away from heat, sparks, or open flame.
  

• Ensure the aquarium is well-established (at least 4 weeks old) before treatment. 
• Clean tank surfaces and trim algae-covered plants, and remove activated carbon during treatment for best results.
• Dosage: Add 1 mL per 10 US gallons (≈ 5 mL per 50 gallons). 
• Frequency: Repeat every 3 days until algae is visibly reduced.
• Once controlled, shift to maintenance dosing once weekly. 
• After treatment: Siphon or scrape out dead algae promptly to prevent oxygen depletion.
• Aeration: Ensure strong, continuous aeration throughout the treatment period.