http://www.lrtm.co.uk/#/pura-nitratelock/4534620111 i dont believe this is a competiting site so the link should be ok
if not here is info from one site
PURA NitrateLock rapidly removes and maintains extremely low to non-measurable levels of nitrates in fresh and salt-water aquariums. Long lasting, can be regenerated 100's of times.
Drastically reduces number of necessary water changes. Regeneration is accomplished with plain table salt, quick and completely safe.
Convenient to implement, comes with a 6" x 12" 300-micron media bag. Can also be used in a media reactor or fluidized bed filter.
Pura NitrateLock is a technical type product and must be used according to following principles for rapid removal of nitrates:
1. Organics must be removed with fresh carbon prior to use of the Nitratelock resin. Any carbon used to remove organics must have been placed into tank 1 to 5 days prior to use of resin.
2. The carbon must be implemented in a manner that forces the water through the carbon.
3. The Pura NitrateLock must be implemented within the enclosed media bag, a media reactor or fluidised bed filter for optimal performance.
4. In cases of higher nitrates, it is beneficial to regenerate the Nitratelock every 24 hours to aid in rapid reduction of the nitrate levels. There after, regenerate NitrateLock as and when required to maintain satisfactory nitrate levels.
In saltwater aquariums, expect half of the present nitrates to be removed prior to regeneration being required. After each regeneration half of the present nitrates will be removed.
500 ml - treats 50 Gal tank for up to 24 months
