Orenda Technologies ORE-50-212 55 gal CV700 Catalytic Enzyme Water Cleaner & Phosphate Control Drum. CV-700 Catalytic Enzyme & Phosphate Remover Water Cleaner Concentrate is a unique, stabilized liquid pre-formed enzyme system with a phosphate remover that effectively catalyzes the bio-oxidation of organic contaminants and removes ortho-phosphates commonly found in pools, spas and other recreational water systems. Routine application of CV-700 will positively maintain water clarity, prevent both organic and ortho-phosphate contamination of water, and permit design chlorine production from salt water chlorine generators.