What will using Purigen do to my planted aquarium? It says it removes nitrites, nitrates and ammonia, but will adding something like Flourish Nitrogen replace the nitrates lost by the filter? I'm not to sure the difference between nitrates and nitrogen...
And will it have an effect on other essential plant nutrients? Should I use my "Purigen Cartridge" (plastic filter backing w/purigen enclosed in a mesh bag) once a week rather than continuously?
