FerroxiPhost-G 600g ajo phosphate and nitrate should eventually

phosphate and nitrate should eventually become immeasurable (or nearly so) when a balance is reached between the rates of nutrient-input and nutrient-assimilation

or similar device

If you see cloudiness

This isn't likely

Advanced: Determine the alkalinity in the aquarium using an accurate test kit before supplementing

FerroxiPhost-G 600g ajo phosphate and nitrate should eventuallyGranular Ferric Oxide for Phosphate Control in all Marine & Freshwater Aquaria Overview Directly and efficiently removes reactive phosphate from aquarium water. Also removes silicate and phosphate based organic material from aquarium water, oftenresulting in improved water clarity (particularly in aquaria with heavy bioloads). Safe for use in all freshwater and marine aquaria, including planted and reef systems. For complete information, click the