Bioguard Sparkle Up (1.5lb)BioGuard Sparkle Up is a cellulose filter aid intended to be used when your filter experiences difficulty in filtering very small particles. This product helps the filter remove tiny particles of dirt, plaster dust, dead algae, pollen, and other small bits of debris. It also helps prevent metals, which prevents staining. Sparkle Up has been proven to enhance filter performance and it is approved for use in all filter types.