Orenda PR-10000-QT. Phosphate Remover Concentrate, 1-QT.

PR-10, 000 is a highly concentrated, all-natural rare earth phosphate remover. It is formulated to react with phosphates in water, allowing for them to be removed from solution. It reacts with all known types of phosphates on contact, and hardens them into a fine precipitate, which falls out of solution. The inert phosphates then floc out, to be vacuumed or filtered out of the pool. PR-10, 000 causes cloudiness, which can last anywhere from a few hours to a few days. Use as needed, and do not exceed the recommended dosage unless otherwise specified

Make sure this fits by entering your model number.
Highly concentrated, removes phosphates on contact
PR-10,000 causes cloudiness indicating performance, which can last anywhere from a few hours to a few days
Reacts upon addition in water, circulation or filtration is required
Use as needed, and do not exceed the recommended dosage unless otherwise specified
NSF/ANSI-50 Certified for Professional Use