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 will remove organics and particulates in the sub-micron range; it will also help control ammonia, nitrates, and phosphates.
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).
The 100ml size of renew comes pre-bagged and ready to use (after minor rinsing).