Seachem Purigen is an extra fine filtration media which should be added to the aquarium filter in a fine mesh bag. Purigen absorbs nitrogenous organic waste and dissolved organic compounds (DOC's), before they break down into harmful waste such as ammonia, nitrite and nitrate, therefore preventing future problems.
We believe every tank should use this product from the start, but this is also the perfect product for those who are struggling with nitrate, despite maintaining their aquarium correctly, especially more mature aquarium systems. Sometimes the nitrogen output on an aquarium is too high to control with water changes alone. The build up or back log of DOC's outweighs the benefits of a water change and regular filtration, and this leads to an excess of nitrate which nothing seems to fix. This is where the benefits of Purigen are clearly seen. while Purigen doesn't actively remove nitrate, it will absorb dissolved organic compounds at the earliest stage before they turn into nitrate, ensuring your water changes are effective for nutrient control.
This is also the perfect product for planted tanks and the control of excess nitrate. In planted aquariums where you may wish to have more control of nutrients such as nitrate to feed your plants accurately, Purigen will not remove the nitrate you may be adding to the tank. It will simply absorb the organics that may add to your nitrate causing excess. So you are not wasting product, simply controlling your aquarium environment.
The added side effect of Purigen is the amazing water clarity. No media produces clearer water than Purigen and the results have been compared to that of Ozone. Purigen will quickly remove tannings and impurities in the water as well as the smallest organic compounds, ensuring truly crystal clear water. You may think you have clear water, but until you have added Purigen, you haven't.