LOW RANGE (≤15PPM) BIOCHEMICAL NITRATE REDUCTION. LR Nitrate Remover is designed for aquariums that have 15ppm or lower nitrate. It is formulated specifically to reduce nitrate without promoting the nuisance bio-bacteria slime within marine/reef environments and works by providing bio-available carbon sources to denitrifying bacteria present in media, deep sand beds & inner pores of live rock. The bacteria oxidise the carbon into carbon dioxide while reducing nitrate to chemically inert nitrogen gas. I If you are experiencing nitrate levels higher than 15ppm, we recommend using our HR Nitrate Remover then making the switch to LR Nitrate Remover once nitrate becomes 15ppm or lower. Contents: – Deionised water – Bioavailable Carbon Sources Required Parameters: – Maximum 15ppm nitrate – dKH 7+ – pH 8.2+ Instructions: Shaking is not required, however, if product has been left standing for a length of time invert bottle 3-4 times before using. Directions: This product must be used in saltwater aquariums with a protein skimmer. Add product to high water flow. Do not overdose.