sera Silicate Clear, 500 g

sera silicate clear is delivered with a practical filter media bag. Briefly rinse with running water before use, then simply place in a filter or a place with good water circulation. Remains active up to three months, depending on the silicate level. 500 g (1.1 lb.) are sufficient for an aquarium holding 200 - 400 liters (53 - 106 US gal.).