GLB® SuperSonic sanitizes, clarifies, fights algae and won’t over-stabilize pool water. It is safe for use on all pool surfaces and leaves no residue. Contains 73% available chlorine.
It is a violation of Federal law to use this product in a manner inconsistent with its labeling.
Add the recommended dosage of this product during evening hours while the filter pump is running. When adding this product to your pool, broadcast the product evenly over a wide area in the deepest part of the pool. If any granules settle to the bottom of the pool, use brush to disperse. Re-entry into treated pools is prohibited above 4 ppm due to risk of bodily harm.
Every 7 days, or as necessary to prevent pool problems, shock treat/super chlorinate the pool by adding 9-18 ounces of this product per 10,000 gallons of water to provide 5 to 10 ppm available chlorine. Additional shock treatments may be required to correct problems which are caused by visible algae, high bathing loads, heavy wind and rainstorms. Additional shock treatments may also be required to correct problems such as unpleasant odors and eye irritation. Check the available chlorine with a suitable test kit.