The key factor to controlling nitrate primarily relates to how you take care of your aquarium. At various stages in the life of a saltwater aquarium, from a newly cycled tank to a well established one, you should set up a regular maintenance care routine that is suitable for your particular system.
Using Mangrove Plants
The use of mangrove plants in saltwater aquarium systems to reduce and control nitrate is not a new concept by any means. This method of filtration has been around for some time, but with the popularity of wanting to find "natural" ways to take care of an aquarium, mangroves are being discovered as a good no chemicals or additives needed way to do it.