SWC Xtreme NP Reduction Bio Media is the most effective filtration used for the control of nitrates and phosphates within the aquarium ecosystem, while also providing a continuous bacterial food source for the health and well being of the aquarium ecosystem. SWC Xtreme NP Reduction Bio Media is best utilized with SWC Xtreme NP Reduction Reactors. These reactors are designed with SWC Xtreme NP Reduction Bio Media in mind. Media should be kept fluidized for optimum results. The SWC Xtreme NP Reduction Bio Media cannot be overdosed. However if your aquarium ecosystem is high in nutrients, you may experience a brief bacterial bloom. This will give your aquarium water a white cloudy appearance. If this occurs monitor and maintain an appropriate pH level. For optimum results utilize the following amount of SWC Xtreme NP Reduction Bio Media 250ml per 50 gallons/500ml per 100 gallons/1000ml per 200 gallons. Dosage may be increased depending on your unique bio load requirements. The first step to enhancing a healthy aquarium ecosystem begins with pre soaking the SWC Xtreme NP Reduction Bio Media in Reverse osmosis water for 24 hours. Then introduce 50% of the recommended dosage of the SWC Xtreme NP Reduction Bio Media into a SWC NP Reduction Reactor and introducing the remaining 50% of the recommended dosage to the SWC NP Reduction Reactor after a 1 week period. Make sure you are utilizing a powerful protein skimmer to prevent oxygen depletion. The use of the appropriately sized model of SWC Xtreme Protein Skimmer will help improve your ability to maintain optimal oxygen levels. Direct the output of the SWC Xtreme NP Reduction Reactor towards the input of the SWC Xtreme Protein Skimmer. SWC Xtreme NP Reduction Bio Media may need to be replenished as the bio media are consumed by the NP Reduction process. This will need to be addressed at approximately the 8-12 month period of time, depending on your unique bio load. IMPORTANT: Maintain a high enough water flow through the SWC Xtreme NP Reduction Reactor to maintain a fluidized column. Too slow of a flow and you may produce a toxic hydrogen sulfide gas. This is detrimental to your aquarium ecosystem. Using a UV Sterilizer or Ozone Generator will slow the growth of bacteria in the reactor and increase the cycling time of the SWC Xtreme NP Reduction Bio Media. SWC Xtreme NP Reduction Bio Media is ecologically friendly and is totally bio degradable. Does not contain harmful PCL resins Not Manufatured in China as some other inferior products are.