Flourish Phosphorus 250mL

Flourish Phosphorus is a safe solution (4,500 mg/L phosphate) of potassium phosphate that takes the guess work out of phosphate dosing. KEY FEATURES: Phosphorus supplement for the planted aquarium A safe 4500 mg/L solution of potassium phosphate Takes the guesswork out of phosphate dosing DIRECTIONS: Beginner Use 2.5mL (half a cap) for each 80L (20 US gallons) once or twice a week or as needed in response to signs of phosphorus deficiency (e.g. stunted growth, plant dark green).