Frequently Asked Questions:

How is OCION PX10 / POLYDEX applied?
Follow label directions. Product may be applied through sprinkler, furrow, border, flood or basin, and drip or trickle chemigation systems; by boat using submerged hoses or surface spraying; from the shoreline by direct pour or surface spraying; by metering into irrigation lines; and by injecting into drip systems. Contact your OCION tech rep for more information on applying POLYDEX / OCION PX10 to specific water bodies, or water systems.

Is OCION PX10 / POLYDEX safe to handle?
The product is odorless and safe to handle with the following precautions. Always wear the personal protective equipment outlined on the label. Use in a well-ventilated area. Avoid contact with clothing, skin and eyes. Do not drink concentrate. Keep away from children. Refer to label for first aid information.

Should OCION PX10 / POLYDEX be diluted before applying?
OCION PX10 / POLYDEX is a concentrated formulation that may or may not require dilution prior to application in water bodies, depending on the desired application, characteristics of the water body, reservoir, or irrigation system being treated. POLYDEX / OCION PX10 is self-dispersing in water. For specific application instructions, refer to product labeling or consult your OCION tech rep for more information.

Should OCION PX10 / POLYDEX be spread evenly over the water or in just one spot?
OCION PX10 / POLYDEX is self-dispersing in water. It can be applied in one spot and will self-disperse evenly at the rate of 20 feet (6 metres) per hour in all directions. OCION PX10 / POLYDEX is applied through chemigation systems, metering into irrigation lines, injecting into drip systems, and by direct pour, or spray application, depending on the size and characteristics of the water body. Consult your OCION tech rep for more information on applications to specific water bodies.

How should OCION PX10 / POLYDEX be applied when algae is present on the surface of the water?
Spray directly on the algae-infested surface. Pre-dilute 1 part OCION PX10 / POLYDEX to 5 parts water to ensure uniform application. Test water weekly for the first month then every other week to maintain a minimum 0.2 ppm ionized copper as residual. For water contaminated with heavy mats of algae, physical removal of surface algae is recommended, prior to applying OCION PX10 / POLYDEX, for optimal results.

When should OCION PX10 / POLYDEX be applied to control algae?
OCION PX10 / POLYDEX can be applied any time of year however, it is most cost effective when used to prevent algae growth. In temperate climates, apply in the early spring or at the first sign of algae and continue monthly top-up treatments through the autumn.

How quickly does OCION PX10 / POLYDEX work?
OCION PX10 / POLYDEX starts to work immediately. Typically algae will die and turn brown within 24 hours of application. OCION PX10 / POLYDEX does not oxidize or burn the organisms so may take from 2 hours to 2 weeks to get complete results depending on the volume of biomass and product concentrations used.

Will OCION PX10 / POLYDEX control weeds other than algae?
OCION PX10 / POLYDEX is able to suppress certain nuisance aquatic plants, including Hydrilla, Hyacinth, and Potamogeton. OCION PX10 / POLYDEX controls rooted, submerged, and floating aquatic weeds.

How often should OCION PX10 / POLYDEX be applied?
Maintaining 0.3 to 1.0 ppm of OCION PX10 / POLYDEX ionized copper is recommended. Take weekly readings and keep a record. The demand for OCION PX10 / POLYDEX will gradually decrease and stabilize as algae is killed. Copper test kits measure copper levels quickly and simply and are available from OCION distributors. Refer to label instructions, or contact your OCION tech rep for more information.

Can OCION PX10 / POLYDEX treated water be used for irrigation?
Yes*. At the suggested dosage levels, OCION PX10 / POLYDEX has no known detrimental effect on plants. In fact, in foliar irrigation, users have observed improved disease and insect control and plant growth. In conventional and drip irrigation, users report cleaner lines and emitters.
*PLEASE NOTE: Permitted applications and product registrations vary by jurisdiction. Contact your OCION distributor for information on permitted uses in your region.

Can OCION PX10 / POLYDEX treated water be used for drinking?
Yes. OCION PX10 / POLYDEX is permitted for use in potable water for algae and bacterial control before final purification. Moreover, OCION PX10 / POLYDEX is independently certified by NSF International to NSF/ANSI Standard 60 for use in drinking water.

Will OCION PX10 / POLYDEX harm fish?
OCION PX10 / POLYDEX may be toxic to fish and other aquatic organisms at very low concentrations. In general, bottom feeders and young fish (e.g. trout fry) are the most susceptible. OCION recommends applying concentrations no greater than 0.06 ppm copper for waters containing copper sensitive fish species, and 0.3 ppm for waters containing more copper resistant fish species. Consult with your OCION tech rep prior to use where aquatic life requires protection.

Are there special considerations for heavy algae conditions?
If algae is present in the entire water body, it is recommended to treat only 25% of the volume of water at any one time.  Allow 4 days to 7 days between subsequent treatments until control is achieved with a return to healthy oxygen levels.

Is it necessary to remove dead algae from the dugout?
While it may be aesthetically desirable, there is no need to clean the sediment or dead algae from the bottom or surface of the water. Using OCION PX10 / POLYDEX regularly will stop accumulation of dead organic matter from algae.

Does OCION PX10 / POLYDEX change water composition?
OCION PX10 / POLYDEX is chemically inert. It does not start or join any kind of chemical reaction. OCION PX10 / POLYDEX will in no way change the mineral composition of water or any other aqueous substrate. OCION PX10 / POLYDEX will add only ionized copper. Copper levels will return to low levels as OCION PX10 / POLYDEX treats the conditions presented.

Can OCION PX10 / POLYDEX “fix” polluted water?
OCION PX10 / POLYDEX is  not the product to use for water remediation after contamination by anything other than bacteria and algae. It is designed for controlling micro-organisms. OCION PX10 / POLYDEX acts on targeted micro-organisms within the natural copper sensitivity limits of each species.