Remove Phosphorus. Restore Water Quality.
Phoslock® is emerging as the best new technology for reducing phosphorus in ponds, lakes and reservoirs.
- Patented Phosphorus Locking Technology
- Rapid & Permanent Removal of Phosphorus
- Total Maximum Daily Load (TMDL) Compliance Solution
- Water Quality Restoration
Phoslock is a patented phosphorus locking technology to restore water quality in ponds, lakes and reservoirs. Phoslock was developed by the Australian national science agency, Commonwealth Scientific and Industrial Research Organization (CSIRO), to remove phosphorus from water bodies and restore water quality. For over ten years, Phoslock has been successfully used in water resource restoration programs around the world. Although Phoslock is a new technology to the United States (2010), it is rapidly emerging as the most effective phosphorus inactivation and water quality restoration solution for ponds, lakes and reservoirs.
Given the favorable features of Phoslock, such as its very low toxicity, its ability to permanently bind free reactive phosphorus (FRP) over a wide range of water chemistries, and the fact that it does not form flocs, Phoslock is emerging as the most effective phosphorus locking technology for in-situ phosphorus management in surface water.
Phoslock goes right to the root cause of why many ponds persistently experience poor water quality—excessive phosphorus levels. Phoslock allows pond owners to make one early season application and significantly reduce phosphorus levels, improving water quality.
Directions for Use
Directions for Use For best results, distribute uniformly over the surface of the waterbody, or the area targeted for application, as an aqueous slurry. Under certain conditions Phoslock granules may also be applied directly to the water based on management objectives and site conditions. For applications to waters with alkalinity less than 20 ppm, lower application rates may be needed.
Given the favorable features of Phoslock, such as its very low toxicity, its ability to permanently bind free reactive phosphorus (FRP) over a wide range of water chemistries, and the fact that it does not form flocs, Phoslock is emerging as the most effective phosphorus locking technology for in-situ phosphorus management in surface water. What is Phoslock Phoslock is a modified bentonite clay product containing lanthanum, a naturally occurring earth element. Several independent organizations have conducted extensive laboratory and field studies on the toxicity of Phoslock using a range of aquatic organisms and the United States Environmental Protection Agency toxicity testing criteria.
The results of acute and chronic toxicity tests of Phoslock and lanthanum using a number of sensitive organisms including: several species of water flea (Daphnia); several species of Rainbow fish; freshwater shrimp; benthic organisms such as amphipods, mayflies and midge larvae; demonstrated no toxicity of Phoslock to aquatic organisms at the dose rates used to remove FRP from surface waters. The possibility of direct exposure of Phoslock and/or lanthanum to the human body is very limited during or after an application of Phoslock.
We suggest that there is no risk to human health by a Phoslock application to a water body (including drinking water reservoirs) at dose rates used to remove FRP from surface waters. The safety margin is substantial and sufficient to ensure that the only exposure of lanthanum (in Phoslock) would always be much less than the therapeutic dose used in the medical industry. Handlers and applicators should always follow label and MSDS directions. How Phoslock Works Rapid and Permanent Phosphorus Removal Phoslock has a high affinity to rapidly bind and permanently remove free reactive phosphorus (FRP) from the water column shortly after application. As Phoslock settles to the bottom of a water body, lanthanum continues to filter phosphorus by binding FRP released from the sediment on its available sites. The phosphorus bond with Phoslock (lanthanum) is permanent.
Effective in Diverse Water Conditions Phoslock is an environmentally compatible and effective solution in a wide range of water chemistries in ponds, lakes and reservoirs. Phoslock programs require no buffer to protect water quality and aquatic life during and after application. The removal of phosphorus from the water by Phoslock is attributed to lanthanum that binds to phosphate molecules and forms a highly stable mineral LaPO4.nH2O (Rhabdophane). This mineral integrates within the existing water body sediments.
Phoslock Label --- Phoslock MSDS
Application Rate: 55 to 100 lbs per acre foot.
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