Our phosphate filters are alumina-free, non-toxic phosphate-magnets that remove only soluble and insoluble phosphates, not expensive essential trace elements. PF-200 is for general phosphate level maintenance. It is completely safe for freshwater, saltwater, and reef aquariums.

• • For all Freshwater and Marine Aquariums.
  • Patented Formula Completely Safe for Reef Tanks and Invertebrates
  • Removes up to 800 mg Within 48-hours
  • Helps to Control Red Algae, Hair Algae & Cyanobacteria

Tropical Science Phosphate Filters will quickly remove 2-ppm phosphate from up to 120-gallon aquariums and has been formulated to maintain very low (less than 0.05 ppm) or undetectable levels. Phosphate Filters are compatible with all aquarium products, and removes only PO4, and adds nothing to the aquarium water.

* NOTE: Phosphates are a common trace element and will accumulate due to the use of some fish foods, carbons, or even tap water, water changes.