DVANCED - 7,500 GALLONS: WV-B2: Protection for all tank and RV Park water. 99.99% reduction of common water-borne bacteria1, mold spores2, algae2, and parasitic protozoan cysts3. Reduces chlorine taste & odor. Plus dirt, rust, sand, & silt. 7,500 gallons. Flow rate exceeds 2.5 GPM with minimal pressure drop. Tubing and fittings included. NSF Certified.