Seachem Renew adsorbentas
Renew™ is ideal for use in systems where phosphate released from all activated carbons poses a problem. Renew™ is also less aggressive than carbon, making it well suited for reefs and planted aquaria. It is also beneficial for use in soft water aquaria where the pH-raising property of many carbons is not an asset.
Renew™ should be used in exactly the same manner as activated carbon. Use 250 mL for each 120–160 L (30–40 gallons*). Use in a filter bag only. Although Renew™ is clean, it is advisable to rinse before use. It lasts about the same as carbon (4–6 weeks).