Get rid of phosphates, silicates, and certain organic nutrients in your decorative pond! The Water Garden Oasis Pond PhosGuard is a non-herbicidal, environmentally sound approach to the problem of phosphate control. The filter absorbent is spherical, which allows for maximum water flow through filter media. Granular phosphate removers can become compacted, dramatically limiting their capacity to remove phosphate. If the media can’t come into contact with the water, it can’t remove phosphate from it. One liter treats between 100 to 300 US gallons.
Directions: Use Pond PhosGuard in the chemical module of your pond filter. If a chemical module is lacking, place in your pond filter so as to maximize the amount of water passing through it. The beads are sufficiently large that a filter bag should not be required for most filters. Check the specifications for your filter. Each liter (approximately a quart) of Pond PhosGuard will treat about 100 to 300 gallons for 1 to 3 months, depending on the biological load of the pond. It works better at alkaline or neutral pH. Avoid using phosphate based buffers or fertilizers that contain phosphate or nitrate. Caution: May generate heat on initial contact with water. Pre-wet by slowly adding to a double volume of water (e.g. pre-wet 1 L of product with 2 L of water).