MasterLine Purity

The MasterLine Purity is a filter medium that ensures clear water and also prevents algae formation in the water. The filter medium absorbs organic matter from the water. They arise when uneaten food, faeces, dead plant remains or even dead animals are metabolised by bacteria. The filter medium may have a specific odour, but this is common. If the filter medium is loaded with organic substances, the colour of the granulate slowly changes to brown. The more intense the colour becomes, the more organic matter was filtered out of the water. This is a sign that the filter medium needs to be regenerated.