Phosphate is the main cause of algae in the aquarium. The phospahte content in the aquarium water should be tested regularly and not be risen over 0,1-0,3 mg/l. ROWAphos fights successfully high phosphate values in the fresh and sea water aquarium without the aquarium water to influence negatively. ROWAphos can be used both in the bypass-way, and in the main stream. The material is brought in either into the attached filtering trunk, or between two layers of filter cotton wool. Dosage: 100 ml are sufficient for 200-400 l fresh water, or 100-200 l sea water.Do you have questions about this article ?