For a natural blackwater effect as in the tropics. Lively and healthy fish, shrimps and crayfish. Water according to the original biotopes supports coloration and natural behavior. Immediately binds heavy metals. No pH value alterations. Reduced algae growth due to reduced light. Long lasting water tint. Extremely economic. sera blackwater aquatan with the Bio-Protect Formula conditions tap water to dark, clear, fish friendly freshwater just like in tropic waters.Recommended dosage:Add one capful blackwater aquatan, filled up to the end of the outer corrugation (10 ml / 0.3 fl.oz.) per each 50 liters (13.2 US gal.) of aquarium water. A brief turbidity is desired and shows the efficacy of the product. The turbidity will disappear within a few hours, the water will then be dark and clear.Treats: 132 Gallons (500 liters)Size: 100 mL (3.38 fl. oz.)
